adjective

twelfth

twelfth [ordinal number]

12th written as a word

US /twelfθ/ 

دوازدهمين‌، دوازدهم‌

مثال: 

the twelfth grade

کلاس دوازدهم

12th written as a word

معادل فارسی: 

دوازدهمين‌، دوازدهم‌

مثال انگلیسی: 

the twelfth grade

کلاس دوازدهم

Oxford Essential Dictionary

twelfth

 adjective, adverb, pronoun
12th

Longman Dictionary of Contemporary English

twelfth

I. twelfth /twelfθ/ BrE AmE noun [countable]
[Language: Old English; Origin: twelfta, from twelf; ⇨ ↑twelve]
one of twelve equal parts of something

Oxford Advanced Learner's Dictionary

twelfth

 

 

twelfth [twelfth twelfths]   [twelfθ]  ;   [twelfθ]  ordinal number, noun  There are examples of how to use ordinal numbers at the entry for fifth.

Main entry: twelvederived

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition
 

twelfth / twelfθ / ordinal number

12th written as a word:

Our next meeting is on the twelfth ( of May).

© Cambridge University Press 2013

Collins COBUILD Advanced Learner’s English Dictionary

twelfth

[twe̱lfθ]
 ♦♦
 twelfths

 1) ORD The twelfth item in a series is the one that you count as number twelve.
  ...the twelfth anniversary of the April revolution.
  ...a twelfth-century church.
 2) FRACTION A twelfth is one of twelve equal parts of something.
  She is entitled to a twelfth of the cash.

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary: 

twelfth

 

2twelfth adj : occupying the number 12 position in a series
• the twelfth day in a row
• finished in twelfth place
- twelfth adv
• Our son finished twelfth in the race.
• the twelfth best-selling book

 

eleventh

eleventh [ordinal number]

11th written as a word

US /ɪˈlev·ənθ/ 

يازدهم‌، يازدهمى‌، يازدهمين‌

مثال: 

the eleventh person

نفر يازدهم‌

11th written as a word

معادل فارسی: 

يازدهم‌، يازدهمى‌، يازدهمين‌

مثال انگلیسی: 

the eleventh person

نفر يازدهم‌

Longman Dictionary of Contemporary English

eleventh

I. eleventh1 /ɪˈlevənθ/ BrE AmE adjective

1. coming after ten other things in a series:

in the eleventh century

her eleventh birthday

2. the eleventh hour the last moment before something important happens:

At the eleventh hour the government decided that something had to be done.

—eleventh pronoun:

I’m planning to leave on the eleventh (=the 11th day of the month).

 

Oxford Advanced Learner's Dictionary

eleventh

 

 

elev·enth [eleventh elevenths]   [ɪˈlevnθ]  ;   [ɪˈlevnθ]  ordinal number, noun  There are examples of how to use ordinal numbers at the entry for fifth.

Main entry: elevenderived

 

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition
 

eleventh / ɪˈlev. ə nθ / ordinal number

11th written as a word:

Her birthday is on the eleventh ( of this month).

© Cambridge University Press 2013

Collins COBUILD Advanced Learner’s English Dictionary

eleventh

[ɪle̱v(ə)nθ]
 ♦♦
 ORD

 The eleventh item in a series is the one that you count as number eleven.
  We were working on the eleventh floor.

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary: 

eleven

 

elev·en /ɪˈlɛvən/ noun, pl -ens
1 [count] : the number 11
2 [count] : the eleventh in a set or series
• page eleven
• item/question number eleven
3 [noncount] : eleven o'clock
• I got home last night at eleven.
- eleven adj
eleven turtles
- eleven pronoun
Eleven (of them) were absent from the ceremony.
- elev·enth /ɪˈlɛvənɵ/ noun, pl -enths [count]
• one eleventh of the total
- eleventh adj
• the eleventh person in line
- eleventh adv
• He finished eleventh in the race.

tenth

tenth [ordinal number]

coming after nine other things in a series

US /tenθ/ 

دهم‌، دهمين‌

مثال: 

the tenth person

نفر دهم‌، دهمين‌ نفر

 

coming after nine other things in a series

معادل فارسی: 

دهم‌، دهمين‌

مثال انگلیسی: 

the tenth person

نفر دهم‌، دهمين‌ نفر

Oxford Essential Dictionary

tenth

 pronoun, adjective, adverb

1 10th

2 one of ten equal parts of something; 1/10

Longman Dictionary of Contemporary English

tenth

I. tenth1 /tenθ/ BrE AmE adjective
coming after nine other things in a series:
in the tenth century
her tenth birthday
—tenth pronoun:
I’m planning to leave on the tenth (=the tenth day of the month).

Oxford Advanced Learner's Dictionary

tenth

 

 

tenth [tenth tenths] ordinal number, noun   [tenθ]    [tenθ] 

 

ordinal number

10th  There are examples of how to use ordinal numbers at the entry for fifth.

 

noun
each of ten equal parts of sth

see possession is nine tenths of the law at  possession 

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition
 

tenth / tenθ / ordinal number

10th written as a word:

This is his tenth year of working for the company.

Our next meeting is on the tenth ( of April).

The team was/came tenth in the league.

© Cambridge University Press 2013

Collins COBUILD Advanced Learner’s English Dictionary

tenth

[te̱nθ]
 ♦♦
 tenths

 1) ORD The tenth item in a series is the one that you count as number ten.
 2) FRACTION A tenth is one of ten equal parts of something.
  He finished three-tenths of a second behind Prost.

 

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary: 

tenth

 

2tenth adj : occupying the number ten position in a series
• This year is our tenth wedding anniversary.
• the tenth grade
- tenth adv
• the world's tenth largest country

ninth

ninth [ordinal number]

coming after eight other things in a series

US /nɑɪnθ/ 

نهم‌، نهمين‌، نهمى‌

مثال: 

the ninth day

نهمين‌ روز

 

coming after eight other things in a series

معادل فارسی: 

نهم‌، نهمين‌، نهمى‌

مثال انگلیسی: 

the ninth day

نهمين‌ روز

Longman Dictionary of Contemporary English

ninth

I. ninth1 /naɪnθ/ BrE AmE adjective
coming after eight other things in a series:
in the ninth century
her ninth birthday
—ninth pronoun:
I’m planning to leave on the ninth (=ninth day of the month).

Oxford Advanced Learner's Dictionary

ninth

 

 

ninth [ninth ninths] ordinal number, noun   [naɪnθ]    [naɪnθ] 

 

ordinal number

9th  There are examples of how to use ordinal numbers at the entry for fifth.

 

noun

each of nine equal parts of sth

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition
 

ninth / naɪnθ / ordinal number

A2 9th written as a word:

The ninth letter of the alphabet is I.

The school term ends on the ninth ( of July).

She was/came ninth in the national finals.

© Cambridge University Press 2013

Collins COBUILD Advanced Learner’s English Dictionary

ninth

[na͟ɪnθ]
 ♦♦
 ninths

 1) ORD The ninth item in a series is the one that you count as number nine.
  ...January the ninth.
  ...students in the ninth grade.
  ...ninth century illustrated manuscripts.
 2) FRACTION A ninth is one of nine equal parts of something.
  In Brussels the dollar rose by a ninth of a cent...
  What you see is only the tip. Eight ninths of it is under the sea.

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary: 

ninth

 

2ninth adj : occupying the number nine position in a series
• on the ninth day
• the book's ninth edition
• She's in (the) ninth grade at school.
- ninth adv
• He finished ninth in the race.
• the country's ninth largest city

eighth

eighth [ordinal number]

coming after seven other things in a series

US /eɪtθ/ 

هشتم‌، هشتمين‌

مثال: 

the eighth grade

كلاس‌ هشتم‌

 

 

coming after seven other things in a series

معادل فارسی: 

هشتم‌، هشتمين‌

مثال انگلیسی: 

the eighth grade

كلاس‌ هشتم‌

Oxford Essential Dictionary

eighth

 pronoun, adjective, adverb, noun

1 8th

2 one of eight equal parts of something;

Longman Dictionary of Contemporary English

eighth

I. eighth1 /eɪtθ/ BrE AmE adjective
coming after seven other things in a series:
in the eighth century
her eighth birthday
—eighth pronoun:
I’m planning to leave on the eighth (=the eighth day of the month).
 

Oxford Advanced Learner's Dictionary

eighth

 

 

eighth [eighth eighths] ordinal number, noun   [eɪtθ]    [eɪtθ] 

 

ordinal number

8th  There are examples of how to use ordinal numbers at the entry for fifth.

 

noun

each of eight equal parts of sth

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition
 

eighth / eɪtθ / ordinal number

A2 8th written as a word:

He was/came eighth in the race.

Bob's birthday is on the eighth ( of June).

© Cambridge University Press 2013

Collins COBUILD Advanced Learner’s English Dictionary

eighth

[e͟ɪtθ]
 ♦♦
 eighths

 1) ORD The eighth item in a series is the one that you count as number eight.
  ...the eighth prime minister of India.
 2) FRACTION An eighth is one of eight equal parts of something.
  The Kuban produces an eighth of Russia's grain, meat and milk.

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary: 

eighth

 

2eighth adj : occupying the number eight position in a series
• the eighth car in line
• the eighth edition
• Her son is in (the) eighth grade.
- eighth adv
• She finished eighth (in the race).

seventh

seventh [ordinal number]

coming after six other things in a series

US /ˈsev·ənθ/ 

هفتم‌، هفتمين‌

مثال: 

the seventh class

كلاس‌ هفتم

 

coming after six other things in a series

معادل فارسی: 

هفتم‌، هفتمين‌

مثال انگلیسی: 

the seventh class

كلاس‌ هفتم

Oxford Essential Dictionary

seventh

 adjective, adverb, noun

1 7th

2 one of seven equal parts of something; 1/7

Longman Dictionary of Contemporary English

seventh

I. seventh1 /ˈsevənθ/ BrE AmE adjective
1. coming after six other things in a series:
in the seventh century
her seventh birthday
2. be in seventh heaven informal to be extremely happy
—seventh pronoun:
I’m planning to leave on the seventh (=the seventh day of the month).
 

Oxford Advanced Learner's Dictionary

seventh

 

 

sev·enth [seventh sevenths] ordinal number, noun   [ˈsevnθ]    [ˈsevnθ] 

 

ordinal number
7th  There are examples of how to use ordinal numbers at the entry for fifth.

Idiom: in seventh heaven 

 

noun

each of seven equal parts of sth

 

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition
 

seventh / ˈsev. ə nθ / ordinal number

A2 7th written as a word:

It's the seventh ( of May) today.

Our team was/came seventh.

© Cambridge University Press 2013

Collins COBUILD Advanced Learner’s English Dictionary

seventh

[se̱v(ə)nθ]
 ♦♦
 sevenths

 1) ORD The seventh item in a series is the one that you count as number seven.
  I was the seventh child in the family. There were 11 of us altogether.
 2) FRACTION A seventh is one of seven equal parts of something.
  A million people died, a seventh of the population.

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary: 

seventh

 

2seventh adj : occupying the number seven position in a series
• on the seventh day
• the book's seventh edition
• her seventh goal of the season
• I finished in seventh place in the competition.
- seventh adv
• She finished seventh in the race.
• the nation's seventh largest city

sixth

sixth [ordinal number]

coming after five other things in a series

US /sɪksθ/ 

ششم، ششمین

مثال: 

the sixth grade

كلاس‌ ششم‌

 

coming after five other things in a series

معادل فارسی: 

ششم، ششمین

مثال انگلیسی: 

the sixth grade

كلاس‌ ششم‌

Oxford Essential Dictionary

sixth

 pronoun, adjective, adverb, noun

1 6th

2 one of six equal parts of something;

Longman Dictionary of Contemporary English

sixth

I. sixth1 /sɪksθ/ BrE AmE adjective
coming after five other things in a series:
her sixth birthday
the sixth century
—sixth pronoun:
Let’s have dinner on the sixth (=the sixth day of the month).
 

Oxford Advanced Learner's Dictionary

sixth

 

 

sixth [sixth sixths] ordinal number, noun   [sɪksθ]    [sɪksθ] 

 

ordinal number

6th  There are examples of how to use ordinal numbers at the entry for fifth.

 

noun

each of six equal parts of sth

 

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition
 

sixth / sɪksθ / ordinal number

A2 6th written as a word:

I have to return my library books on the sixth ( of July).

England were/came sixth in the 100 metres.

© Cambridge University Press 2013

Collins COBUILD Advanced Learner’s English Dictionary

sixth

[sɪ̱ksθ]
 ♦♦
 sixths

 1) ORD The sixth item in a series is the one that you count as number six.
  ...the sixth round of the World Cup.
  ...the sixth of December.
 2) FRACTION A sixth is one of six equal parts of something.
  The company yesterday shed a sixth of its workforce.
  ...five-sixths of a mile.

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary: 

sixth

 

2sixth adj : occupying the number six position in a series
• on the sixth day
• the book's sixth edition
• I finished in sixth place in the competition.
- sixth adv
• She finished sixth in the race.
• the nation's sixth largest city

fifth

fifth [ordinal number]

coming after four other things in a series

US /fɪfθ/ 

پنجم، پنجمى‌، پنجمين‌

مثال: 

the fifth year

سال پنجم

coming after four other things in a series

معادل فارسی: 

پنجم، پنجمى‌، پنجمين‌

مثال انگلیسی: 

the fifth year

سال پنجم

Oxford Essential Dictionary

fifth

 pronoun, adjective, adverb

1 5th

2 one of five equal parts of something;

Longman Dictionary of Contemporary English

fifth

I. fifth1 /fɪfθ/ BrE AmE adjective
[Language: Old English; Origin: fifta, from fif 'five']
1. coming after four other things in a series:
in the fifth century
her fifth birthday
2. fifth wheel American English informal someone who is not wanted in a particular group of people:
They’d made her feel like a fifth wheel.
—fifth pronoun:
I’m planning to leave on the fifth (=the fifth day of the month).
—fifthly adverb
 

Oxford Advanced Learner's Dictionary

fifth

 

 

fifth [fifth fifths] ordinal number, noun   [fɪfθ]    [fɪfθ] 

 

ordinal number
5th
Today is the fifth (of May).
the fifth century BC
It's her fifth birthday.
My office is on the fifth floor.
It's the fifth time that I've been to America.
Her mother had just given birth to another child, her fifth.
the world's fifth-largest oil exporter
He finished fifth in the race.
Edward V (= Edward the Fifth)

Idiom: take the fifth 

 

noun
each of five equal parts of sth
• She cut the cake into fifths.

• He gave her a fifth of the total amount.

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition
 

fifth / fɪfθ / ordinal number

A2 5th written as a word:

the fifth floor of the building

Tomorrow is the fifth ( of September).

I was/came fifth in the race.

© Cambridge University Press 2013

Collins COBUILD Advanced Learner’s English Dictionary

fifth

[fɪ̱fθ]
 ♦♦
 fifths

 1) ORD The fifth item in a series is the one that you count as number five.
  Joe has recently returned from his fifth trip to Australia.
 2) FRACTION A fifth is one of five equal parts of something.
  India spends over a fifth of its budget on defence.

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary: 

fifth

 

2fifth adj : occupying the number five position in a series
• the fifth dancer in the line
• the fifth annual awards banquet
- fifth adv
• the nation's fifth largest city
• She finished fifth in the race.

 

permanent

US /ˈpɝː.mə.nənt/ 
UK /ˈpɜː.mə.nənt/ 

continuing to exist for a long time or for all the time in the future OPP temporary

معادل فارسی: 

پاينده‌، پايا، پردوام‌، ديرپاى، جاويد، هميشگى‌ ، ماندگار، دائمى‌، ماندنى‌

مثال انگلیسی: 

She is looking for a permanent job.

او در جستجوی یک شغل دائم است. 

Oxford Essential Dictionary

permanent

 adjective
continuing for ever or for a very long time without changing:
I'm looking for a permanent job.
Look at temporary.

>> permanently adverb:
Has he left permanently?a

Longman Dictionary of Contemporary English

permanent

I. permanent1 S2 W2 /ˈpɜːmənənt $ ˈpɜːr-/ BrE AmE adjective
[Date: 1400-1500; Language: Latin; Origin: present participle of permanere 'to stay till the end']
continuing to exist for a long time or for all the time in the future OPP temporary:
He gave up a permanent job in order to freelance.
a permanent change in your eating habits
The blindness that the disease causes will be permanent.
Miller soon became a permanent fixture (=someone or something that is always there) on the team.
—permanence (also permanency) noun [uncountable]:
the permanence of parental love
our desire for some sense of permanence
• • •
THESAURUS
permanent continuing forever, for a very long time, or for the rest of your life: She has permanent damage to her eyesight. | the search for a permanent solution to the problem | They’ve offered her the job on a permanent basis.
lasting continuing for a very long time – used especially when something continues to affect someone or something for a long time: The experience left a lasting impression on him. | Things that happen in early childhood can have a lasting effect on your life. | Shelley was to have a lasting influence on him. | Is there any hope for a lasting peace in the Middle East?
never-ending continuing so long that you think it will never end – used especially when something needs a lot of effort: Keeping the house clean is a never-ending battle. | It was a never-ending task. | The search was never-ending.
perpetual a perpetual state or feeling seems to be there all the time – used especially about something that is very annoying, worrying, or tiring: For many working mothers, balancing the demands of children and job is a perpetual challenge. | The people live in a perpetual state of fear.
everlasting continuing forever – used especially in the following phrases: Gold is the symbol of everlasting love. | He promised them everlasting life.
eternal continuing forever – used especially in the following phrases: Do you believe in eternal life? | the secret of eternal youth | She has my eternal gratitude (=I will always be grateful to her). | You’re always the eternal optimist. (=you always think that good things will happen)

Oxford Advanced Learner's Dictionary

permanent

 

 

per·man·ent adjective, noun   [ˈpɜːmənənt]    [ˈpɜːrmənənt] 

 

adjective
lasting for a long time or for all time in the future; existing all the time
• a permanent job
• permanent staff
• They are now living together on a permanent basis.
• The accident has not done any permanent damage.
• a permanent fixture (= a person or an object that is always in a particular place)
• The gallery hosts various exhibitions and a permanent collection.
Opp:  impermanent, Opp: temporary  
Word Origin:
late Middle English: from Latin permanent- ‘remaining to the end’ (perhaps via Old French), from per- ‘through’ + manere ‘remain’.  
Thesaurus:
permanent adj.
• No permanent damage was done.
lasting • |written enduring • • eternal • • immortal
Opp: temporary
permanent/lasting/enduring/eternal value
a/an permanent/lasting/enduring relationship/solution/legacy  
Example Bank:
• We decided to make the arrangement permanent.
• He decided to make London his permanent home.
• He is aiming to become a permanent fixture in the team.
• He was Vietnam's permanent representative at the UN.
• Holiday camps employ only a very small number of permanent staff.
• I'm not planning to move in here on a permanent basis.
• No permanent damage was done.
• She was unable to find a permanent job.
• The aim is a permanent reduction in inflation.
• The house is in a permanent state of chaos.
• The paintings are on permanent loan to the museum.
• The sheds were replaced with a permanent brick building.
• There is no guarantee of permanent employment after training.

Derived Word: permanently 

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition
 

permanent / ˈpɜː.mə.nənt /   / ˈpɝː- / adjective

B1 lasting for a long time or for ever:

She is looking for a permanent place to stay.

Are you looking for a temporary or a permanent job?

The disease can cause permanent damage to the brain.

A semi-permanent hair dye will wash out after about three months.

He entered the United States in 1988 as a permanent resident because of his marriage to a U.S. citizen.

describes something that exists or happens all the time:

Mont Blanc has a permanent snow cap.

Our office is in a permanent state of chaos.

© Cambridge University Press 2013

Collins COBUILD Advanced Learner’s English Dictionary

permanent

[pɜ͟ː(r)mənənt]
 
 permanents
 1) ADJ Something that is permanent lasts for ever.
  Heavy drinking can cause permanent damage to the brain.
  ...a permanent solution to the problem...
  The ban is intended to be permanent.
  Ant:
  temporary
  Derived words:
  permanently ADV ADV with v, ADV adj His reason had been permanently affected by what he had witnessed... The only way to lose weight permanently is to completely change your attitudes toward food.
  permanence N-UNCOUNT Anything which threatens the permanence of the treaty is a threat to stability and to peace.
  permanency N-UNCOUNT They gradually realized the permanency of their condition.
 2) ADJ: usu ADJ n You use permanent to describe situations or states that keep occurring or which seem to exist all the time; used especially to describe problems or difficulties.
  ...a permanent state of tension...
  They feel under permanent threat...
  There was a permanent 20-yard queue for the portable toilets.
  Syn:
  constant
  Derived words:
  permanently ADV ...the heavy, permanently locked gate.
 3) ADJ: ADJ n A permanent employee is one who is employed for an unlimited length of time.
  At the end of the probationary period you will become a permanent employee.
  ...a permanent job.
  Ant:
  temporary
  Derived words:
  permanently ADV ADV with v ...permanently employed registered dockers.
 4) ADJ: ADJ n Your permanent home or your permanent address is the one at which you spend most of your time or the one that you return to after having stayed in other places.
  York Cottage was as near to a permanent home as the children knew...
  They had no permanent address.
 5) N-COUNT A permanent is a treatment where a hair stylist curls your hair and treats it with a chemical so that it stays curly for several months. [AM](in BRIT, use perm)

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary: 

1per·ma·nent /ˈpɚmənənt/ adj [more ~; most ~] : lasting or continuing for a very long time or forever : not temporary or changing
• She made a permanent home in this country.
• Prolonged exposure to the sun can cause permanent skin damage.
• The museum's permanent collection includes works of art from the 18th century.
• The transcripts will serve as a permanent record of the proceedings.
- per·ma·nence /ˈpɚmənəns/ noun [noncount]
• the permanence of the written word
- per·ma·nen·cy /ˈpɚmənənsi/ noun [noncount]
- per·ma·nent·ly adv
• He was permanently banned from the store.

long

long [adjective] (DISTANCE)

GREAT LENGTH measuring a great length from one end to the other OPP short

US /lɑːŋ/ 
UK /lɒŋ/ 

دراز، بلند (به معنی دراز)

مثال: 

A long dress

لباس بلند

 

GREAT LENGTH measuring a great length from one end to the other OPP short

معادل فارسی: 

دراز، بلند (به معنی دراز)

مثال انگلیسی: 

A long dress

لباس بلند

Oxford Essential Dictionary

adjective (longer /, longest )

1 far from one end to the other:
Which is the longest river in the world?
She has long black hair.
Tokyo is a long way from London.
 opposite short Look at the note at far.

2 You use long to ask or talk about how far something is from one end to the other:
How long is the table?
The wall is 5?m long.
The noun is length.

3 continuing for a lot of time:
a long film
He's lived here for a long time.
 opposite short

4 You use long to ask or talk about the time from the beginning to the end of something:
How long is the lesson?

Longman Dictionary of Contemporary English

long

I. long1 S1 W1 /lɒŋ $ lɒːŋ/ BrE AmE adjective (comparative longer, superlative longest)
[Language: Old English; Origin: long, lang]
1. GREAT LENGTH measuring a great length from one end to the other OPP short:
a long table
long hair
the longest tunnel in the world
He stretched out his long legs.
a long line of people
2. GREAT DISTANCE continuing or travelling a great distance from one place to another OPP short:
a long distance
Springfield is a long way from Chicago.
Liz lives in Cheltenham, which is a long way away.
long journey/walk/flight/drive etc (=a journey etc over a large distance that takes a lot of time)
It’s a long walk to the shops from here.
3. LARGE AMOUNT OF TIME continuing for a large amount of time, or for a larger amount of time than usual OPP short:
a long period of time
a long history of success
He has a long memory.
(for) a long time/while
He’s been gone a long time.
I haven’t been there for a long while.
It took a long time to get everything ready.
She died a long time ago.
long silence/pause/delay etc
There was a long silence before anybody spoke.
She’s recovering from a long illness.
Doctors often work long hours (=work for more time than is usual).
the longest time American English spoken (=a very long time)
It took me the longest time to figure out how to open the windows.
4. PARTICULAR LENGTH/DISTANCE/TIME used to talk or ask about a particular length, distance, or time:
How long is your garden?
How long is the film?
The cable is not quite long enough.
two metres/three miles etc long
The bridge is 140 feet long.
two hours/three days etc long
The speech was twenty minutes long.
5. WRITING containing a lot of words, letters, names, or pages OPP short:
a long novel
a long list
He has a very long name.
He owes money to a list of people as long as your arm (=a very long list).
6. CLOTHING covering all of your arms or legs OPP short:
a long dress
a long-sleeved shirt
7. TIRING/BORING spoken making you feel tired or bored:
It’s been a long day.
8. VOWEL technical a long vowel in a word is pronounced for a longer time than a short vowel with the same sound OPP short
9. how long is a piece of string? British English spoken used when there is no definite answer to a question:
‘How long will it take to finish the project?’ ‘How long is a piece of string?’
10. the long and (the) short of it spoken used when you are telling someone the most important facts about something rather than all the details:
The long and the short of it is that we missed the train.
11. the long arm of somebody/something written the power of someone or something that has authority, especially to catch and punish someone:
He won’t escape the long arm of the law.
12. long face a sad or disappointed expression on someone’s face
13. long in the tooth informal too old – used humorously:
I’m getting a bit long in the tooth for this sort of thing.
14. not long for this world literary likely to die or stop existing soon
15. long on something having a lot of a quality:
He was short on patience, but long on a sense of his own worth.
16. long odds if there are long odds against something happening, it is very unlikely that it will happen
17. in the long run/term used when talking about what will happen at a later time or when something is finished:
All our hard work will be worth it in the long run.
18. long shot someone or something with very little chance of success:
Chelsea are a 20–1 long shot to win the championship.
19. long time no see spoken used humorously to say hello when you have not seen someone for a long time
20. take the long view (of something) to think about the effect that something will have in the future rather than what happens now
21. a long way very much, far, or a great amount or degree:
We’re still a long way from achieving our sales targets.
Psychiatry has come a long way (=developed a lot) since the 1920s.
Your contributions will go a long way towards helping children in need (=will help to reach a goal).
by a long way/shot informal also by a long chalk )British English (=used when something is much better, quicker, cheaper etc)
It was his best performance this year, by a long way.
not by a long way/shot informal also not by a long chalk )British English (=not at all or not nearly)
He had not told Rory everything, not by a long shot.
22. long weekend three or more days, including Saturday and Sunday, when you do not have to go to work or school
at (long) last at ↑last3(2), ⇨ it’s a long story at ↑story(10), ⇨ cut/make a long story short at ↑story(11), ⇨ a little (of something) goes a long way at ↑little2(5), ⇨ have a long way to go at ↑way1(19)
• • •
THESAURUS
long continuing for a long time: The film was very long. | There has been a long period without rain.
lengthy continuing for a long time, especially longer than you want or expect: Drivers face lengthy delays on all roads out of the city. | Police are going through the lengthy process of re-examining all the evidence. | He faces a lengthy prison sentence.
long-running [only before noun] continuing for a long time - used especially about disputes, campaigns, or shows: He has been involved in a long-running dispute with his neighbour. | The programme is one of the longest-running series on television. | a long-running campaign to prevent the airport from being built
long-lasting continuing for a long time – used especially about effects or relationships: Stress can have long-lasting effects. | While at the school, she made many long-lasting friendships.
protracted formal continuing for a long time, especially an unusually long time: Despite protracted negotiations, they were unable to reach an agreement. | The couple have been involved in a protracted battle for custody of their children.
prolonged continuing for a long time, especially longer than expected, or longer in a way that makes a situation worse: He returned to work after a prolonged absence. | Studies have linked prolonged use of the drug to cancer. | a prolonged period of economic decline
extended [only before noun] continuing for a long time - used especially about visits, trips, breaks etc that last longer than was planned: an extended stay in hospital | He took an extended break from work after his father died. | She didn’t like being away from home for extended periods.
lasting [only before noun] strong enough or great enough to continue for a long time: The negotiations were aimed at achieving a lasting peace. | This affair has done lasting damage to the President’s credibility. | The book left a lasting impression on me.
enduring continuing for a long time – used especially about memories, influences, or feelings of liking someone or something: One of my most enduring memories is of going on holiday to France with my parents. | the enduring appeal of Conan Doyle's stories | his enduring love for Ireland
marathon [only before noun] continuing for a very long time and needing a lot of energy, patience, or determination: It was a marathon session of talks which continued until 3 am. | He arrived after a marathon journey across Europe.
■ too long
long-winded continuing for too long - used about speeches, answers, explanations etc: a very long-winded answer to a simple question | He gave a long-winded speech about the company's vision for the future.
interminable very long and boring: They faced an interminable wait in the departure lounge of the airport. | The journey seemed interminable.
long-drawn-out [only before noun] used about a process that continues for much too long: The news heightened expectations that the long-drawn-out investigation might be coming to a close.

Oxford Advanced Learner's Dictionary

long

long [long longs longed longing] adjective, adverb, verb   [lɒŋ]    [lɔːŋ]    [lɑːŋ] 

 

adjective (long·er   [ˈlɒŋɡə(r)]  ;   [ˈlɔːŋɡər]  ; [ˈlɑːŋɡər]  long·est   [ˈlɒŋɡɪst]  ;   [ˈlɔːŋɡɪst]  ; [ˈlɑːŋɡɪst]  

DISTANCE
1. measuring or covering a great length or distance, or a greater length or distance than usual
She had long dark hair.
He walked down the long corridor.
It was the world's longest bridge.
a long journey/walk/drive/flight
We're a long way from anywhere here.
It's a long way away.

Opp:  short

2. used for asking or talking about particular lengths or distances
How long is the River Nile?
• The table is six feet long.

• The report is only three pages long.  

TIME

3. lasting or taking a great amount of time or more time than usual
He's been ill (for) a long time.
There was a long silence before she spoke.
I like it now the days are getting longer (= it stays light for more time each day).
a long book/film/list (= taking a lot of time to read/watch/deal with)
Nurses have to work long hours (= for more hours in the day than is usual).
(NAmE) He stared at them for the longest time (= for a very long time) before answering.

Opp:  short

4. used for asking or talking about particular periods of time
How long is the course?
• I think it's only three weeks long.

• How long a stay did you have in mind?

5. seeming to last or take more time than it really does because, for example, you are very busy or not happy
I'm tired. It's been a long day.
• We were married for ten long years.

Opp:  short  

CLOTHES

6. covering all or most of your legs or arms
She usually wears long skirts.
• a long-sleeved shirt

Opp:  short  

VOWEL SOUNDS

7. (phonetics) taking more time to make than a short vowel sound in the same position
Opp:  short 
more at it's as broad as it is long at  broad  adj., kick sth into the long grass at  kick  v., in the long/short/medium term at  term  n., go a long/some way towards doing sth at  way  n.  
Word Origin:
adj. and adv. n. Old English lang long lange longe Germanic Dutch German lang
v. Old English langian ‘grow long, prolong’ ‘dwell in thought, yearn’ Germanic Dutch langen ‘present, offer’ German langen ‘reach, extend’
 
Thesaurus:
long adj.
There was a long silence.
long-lasting|especially written prolongedlengthyextended|formal protracted
Opp: short, Opp: brief
a long/prolonged/lengthy/extended period
a long/prolonged/lengthy/protracted delay/dispute/illness
long/prolonged/lengthy/extended/protracted negotiations  
Word Family:
long adjective adverb
length noun
lengthy adjective
lengthen verb  
Which Word?:
(for) long / (for) a long time
Both (for) long and (for) a long time are used as expressions of time. In positive sentences (for) a long time is used: We’ve been friends a long time. (For) long is not used in positive sentences unless it is used with too, enough, as, so, seldom, etc: I stayed out in the sun for too long. You’ve been waiting long enough. Both (for) long and (for) a long time can be used in questions, but (for) long is usually preferred: Have you been waiting long?
In negative sentences (for) a long time sometimes has a different meaning from (for) long. Compare: I haven’t been here for a long time (= It is a long time since the last time I was here) and I haven’t been here long (= I arrived here only a short time ago)
Example Bank:
At 900 pages, the book is overly long.
Economy class can be uncomfortable for those with extra-long legs.
His drive to work is fairly long.
My hair had grown long.
That dress looks a bit long to me.
a pair of impossibly long legs
an unusually long pause
He let out a long slow breath.
How long is the film?
I haven't seen him for a long time.
I think it's only about two hours long.
I'm tired. It's been a long day.
It took me a long time to accept the situation.
Nurses have to work long hours.
a long book/film/list
a long corridor/bridge
• long hair

Idioms: as long as  as long as your arm  at long last  at the longest  by a long way  cut a long story short  for long  go a long way  go back a long way  have a long way to go  have come a long way  how long have you got?  how long is a piece of string?  in the long run  it's a long story.  long and short of it  long arm of something  long face  long in the tooth  long live somebody  long on something  long shot  long time no see  no longer  not by a long chalk  so long  take a long look at something  take the long view 

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition
 

long / lɒŋ /   / lɑːŋ / adjective (TIME)

A1 continuing for a large amount of time:

a long film/meeting

I've been waiting a long time .

It's a long time since I worked there.

Apparently the sessions are an hour long.
 

long / lɒŋ /   / lɑːŋ / adjective (DISTANCE)

A1 being a distance between two points that is more than average or usual:

long hair

long legs

a long dress

There was a long queue at the post office.

We're still a long way from the station.
 

long / lɒŋ /   / lɑːŋ / adjective (MANY WORDS)

A2 describes a piece of writing that has a lot of pages or words:

a long letter/book/report

© Cambridge University Press 2013

Collins COBUILD Advanced Learner’s English Dictionary

long

I. TIME

/lɒŋ, AM lɔ:ŋ/

(longer /lɒŋgə(r), AM lɔ:ŋgər/, longest /lɒŋgɪst, AM lɔ:ŋgɪst/)
Frequency: The word is one of the 700 most common words in English.
1.
Long means a great amount of time or for a great amount of time.
Repairs to the cable did not take too long...
Have you known her parents long?...
I learned long ago to avoid these invitations...
The railway had obviously been built long after the house...
...long-established social traditions.
ADV: ADV with v, oft ADV adv/prep

The expression for long is used to mean ‘for a great amount of time’.
‘Did you live there?’—‘Not for long.’...
Developing countries won’t put up with the situation for much longer...
For too long there was a huge gap in the market.
PHRASE: PHR after v
2.
A long event or period of time lasts for a great amount of time or takes a great amount of time.
We had a long meeting with the attorney general...
They sat looking at each other for a long while...
He must have started writing his book a long time ago.
short
ADJ: usu ADJ n
3.
You use long to ask or talk about amounts of time.
How long have you lived around here?...
He has been on a diet for as long as any of his friends can remember...
She reflected no longer than a second before she decisively slit the envelope.
ADV: how ADV, as ADV as, ADV compar than

Long is also an adjective.
How long is the usual stay in hospital?...
The average commuter journey there is five hours long.
ADJ: how ADJ, amount ADJ
4.
A long speech, book, film, or list contains a lot of information or a lot of items and takes a lot of time to listen to, read, watch, or deal with.
He was making quite a long speech...
This is a long film, three hours and seven minutes.
short
ADJ: usu ADJ n
5.
If you describe a period of time or work as long, you mean it lasts for more hours or days than is usual, or seems to last for more time than it actually does.
Go to sleep. I’ve got a long day tomorrow...
She was a TV reporter and worked long hours...
This has been the longest week of my life.
short
ADJ: usu ADJ n
6.
If someone has a long memory, they are able to remember things that happened far back in the past.
short
ADJ: usu ADJ n
7.
Long is used in expressions such as all year long, the whole day long, and your whole life long to say and emphasize that something happens for the whole of a particular period of time.
We played that record all night long...
Snow is sometimes found all summer long upon the highest peaks.
ADV: n ADV [emphasis]

II. DISTANCE AND SIZE

/lɒŋ, AM lɔ:ŋ/

(longer /lɒŋgə(r), AM lɔ:ŋgər/, longest /lɒŋgɪst, AM lɔ:ŋgɪst/)
Frequency: The word is one of the 700 most common words in English.
1.
Something that is long measures a great distance from one end to the other.
...a long table...
A long line of people formed outside the doctor’s office...
Her hair was long and dark...
short
ADJ
2.
A long distance is a great distance. A long journey or route covers a great distance.
His destination was Chobham Common, a long way from his Cotswold home...
The long journey tired him...
I went for a long walk.
short
ADJ: usu ADJ n
3.
A long piece of clothing covers the whole of someone’s legs or more of their legs than usual. Clothes with long sleeves cover the whole of someone’s arms.
She is wearing a long black dress.
...a long-sleeved blouse.
short
ADJ: ADJ n
4.
You use long to talk or ask about the distance something measures from one end to the other.
An eight-week-old embryo is only an inch long...
How long is the tunnel?...
In the roots of the olives, you could find centipedes as long as a pencil.
ADJ: amount ADJ, how ADJ, as ADJ as, ADJ-compar than

Long is also a combining form.
...a three-foot-long gash in the tanker’s side.
COMB in ADJ

III. PHRASES

/lɒŋ, AM lɔ:ŋ/

(longer /lɒŋgə(r), AM lɔ:ŋgər/)
Frequency: The word is one of the 700 most common words in English.
Please look at category 6 to see if the expression you are looking for is shown under another headword.
1.
If you say that something is the case as long as or so long as something else is the case, you mean that it is only the case if the second thing is the case.
The interior minister said he would still support them, as long as they didn’t break the rules...
The president need not step down so long as the elections are held under international supervision.
PHRASE
2.
If you say that someone won’t be long, you mean that you think they will arrive or be back soon. If you say that it won’t be long before something happens, you mean that you think it will happen soon.
‘What’s happened to her?’—‘I’m sure she won’t be long.’...
If every tune from Radiohead is as good as this one is, it can’t be long before they are household names.
PHRASE: oft it PHR before cl
3.
If you say that something will happen or happened before long, you mean that it will happen or happened soon.
German interest rates will come down before long...
Before long he took over the editing of the magazine.
PHRASE: PHR after v, PHR with cl
4.
Something that is no longer the case used to be the case but is not the case now. You can also say that something is not the case any longer.
Food shortages are no longer a problem...
I noticed that he wasn’t sitting by the door any longer.
PHRASE: PHR group/cl, PHR with v
5.
You can say so long as an informal way of saying goodbye.
Well, so long, pal, see you around.
= bye
CONVENTION [formulae]
6.
a long face: see face
at long last: see last
in the long run: see run
a long shot: see shot
in the long term: see term
long in the tooth: see tooth
to take the long view: see view
to go a long way: see way

IV. VERB USES

/lɒŋ, AM lɔ:ŋ/

(longs, longing, longed)
If you long for something, you want it very much.
Steve longed for the good old days...
I’m longing to meet her...
He longed for the winter to be over.
VERB: V for n, V to-inf, V for n to-inf
see also longing

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary: 

1long /ˈlɑːŋ/ adj lon·ger /ˈlɑːŋgɚ/; lon·gest /ˈlɑːŋgəst/
1 a : extending a great distance from one end to the other end : not short
long hair
long legs
• a long corridor
• The bridge is the longest in the world.
• We drove a long distance.
• the long/longer side of the building
• The pants are a little (too) long for me. [=they should be shorter in order to fit me]
b : extending a specified distance : having a specified length
• one meter long
• The whale was 50 feet long.
• “How long was the race?” “The race was five miles long.”
2 a : lasting or continuing for a great amount of time
• a long pause/wait
• They've had a long and happy marriage.
• She finds it hard to sit still for long periods of time.
• It's a long movie.
• The company has a long tradition of serving its customers well.
• I've known them for a long time. [=many years]
• I haven't seen them for/in a (very) long time. = (US) I haven't seen them for the longest time.
• The changes took a long time to come. = The changes were long in coming. [=the changes did not happen quickly]
• It happened a long time ago. [=far in the past; not at all recently]
• The test should take an hour at the longest. [=it should not be longer than an hour]
• She is used to working long hours. [=she often works for many hours at a time]
• He has a very long memory. [=he remembers things that happened far in the past]
• someone with long experience in the UN [=someone who has been in the UN many years]
• She gave him a long look. [=she looked at him for many seconds]
• It's been a long day. [=a difficult day in which time seems to go by slowly]
• We took Friday off and went to the coast for a long weekend. [=a weekend with an extra day added to it]
b : lasting or continuing for a specified amount of time
• The movie is three hours long. [=it lasts three hours]
• A day is 24 hours long.
- see also daylong, monthlong, weeklong
3 a : having many pages, items, etc.
• a long book/essay/list
• The team has had a long streak of wins.
b : having a specified number of pages, items, etc.
• The book is 300 pages long.
• The team's winning streak is 12 games long.
4 of clothing : covering all or most of the arms or legs
• a shirt with long sleeves
long pants
• a long skirt
5 sports : going beyond the area of play
• His second serve was long, so he lost the point.
6 linguistics of a vowel
- used to identify certain vowel sounds in English
long and short vowels
• the long “a” in “make”
• the long “e” in “sweet”
• the long “i” in “ice”
• the long “u” in “use”
- compare 1short 8
7 of someone's face : showing sadness
• Why the long face? [=you look sad; why are you sad?]
a long way : a great distance
• He grew up a long way from here.
• Their house is a long way (away) from here.
- often used figuratively in various phrases
• We've done a lot of work, but we have a long way to go. [=we still have a lot of work to do]
• These changes will go a long way toward/towards making the system more efficient. [=these changes will do a lot to make the system more efficient]
• The company has really come a long way [=the company has made a lot of progress] since/from its humble beginnings.
• These problems go back a long way. [=these problems have existed for a long time]
• She and her business partner go back a long way (together). [=she and her business partner have known each other for a long time]
as long as someone's arm informal : very long : having many pages, items, etc.
• I had a list of things to do that was as long as your/my arm.
at long last
- see 5last
how long is a piece of string
- see 1string
long in the tooth
- see tooth
long on : having or providing a good amount of (something)
• He was long on criticism [=he said many critical things] but short on useful advice.
long time no see informal
- used as a greeting for someone you have not seen for a long time
• Well hello there! Long time no see!
not by a long chalk
- see 1chalk
not long for this world
- see 1world
take the long view
- see 1view
the long arm of the law
- see 1arm

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