seventeen

sev‧en‧teen /ˌsevənˈtiːn◂/ BrE AmE number
[Language: Old English; Origin: seofontiene, from seofon 'seven' + tien 'ten']
the number 17:
a group of seventeen American military officers
I left home when I was seventeen (=17 years old).
—seventeenth adjective, pronoun:
in the seventeenth century
her seventeenth birthday
I’m planning to leave on the seventeenth (=the 17th day of the month).

Oxford Advanced Learner's Dictionary

seventeen

seven·teen [seventeen seventeens] [ˌsevnˈtiːn] [ˌsevnˈtiːn] number
17
Derived Word: seventeenth
Word Origin:

Old English seofontīene, from the Germanic base of seven.

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition

seventeen / ˌsev. ə nˈtiːn / number

A1 the number 17:

I'm nearly seventeen so I should be able to do what I want.

They've been married for seventeen years.

Collins Advanced Learner’s English Dictionary

seventeen

[se̱v(ə)nti͟ːn]
seventeens
NUM
Seventeen is the number 17.
Jenny is seventeen years old.

Merriam-Webster's Advanced Learner's Dictionary

seventeen

sev·en·teen /ˌsɛvənˈtiːn/ noun, pl -teens [count] : the number 17
- seventeen adj
• They lived together for seventeen years.
- seventeen pronoun
• We interviewed seventeen (of them).
- sev·en·teenth /ˌsɛvənˈtiːnɵ/ noun, pl -teenths [count]
• I'll see you on the seventeenth of April.
• The bill is due on the seventeenth (of the month).
• one seventeenth of the total
- seventeenth adj
• The paintings were made in the seventeenth century.
• He finished in seventeenth place.
- seventeenth adv
• She finished seventeenth in the race.