thirteen

thir‧teen /ˌθɜːˈtiːn◂ $ ˌθɜːr-/ BrE AmE number
[Language: Old English; Origin: threotiene, from thrie, threo% 'three' + tien 'ten']
the number 13:
They’ve only sold thirteen tickets so far.
When it happened, I was thirteen (=13 years old).
—thirteenth adjective, pronoun:
It’s Roberto’s thirteenth birthday.
the thirteenth century
I’m planning to leave on the thirteenth (=the 13th day of the month).

Oxford Advanced Learner's Dictionary

thirteen

thir·teen [ˌθɜːˈtiːn] [ˌθɜːrˈtiːn] number
13
Derived Word: thirteenth
Word Origin:

[thirteen thirteenth] Old English thrēotīene (from three and -teen). The spelling with initial thi- is recorded in late Middle English.

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition

thirteen / θɜːˈtiːn / / θɝː- / number

A1 the number 13:

Some people think that thirteen is an unlucky number.

There were twelve or thirteen people waiting at the bus stop.

Collins Advanced Learner’s English Dictionary

thirteen

[θɜ͟ː(r)ti͟ːn]
♦
thirteens
NUM
Thirteen is the number 13.

Merriam-Webster's Advanced Learner's Dictionary

thirteen

thir·teen /ˌɵɚˈtiːn/ noun, pl -teens [count] : the number 13
- thirteen adj
• thirteen students
- thirteen pronoun
• All thirteen (of them) passed the exam.
- thir·teenth /ˌɵɚˈtiːnɵ/ noun, pl -teenths [count]
• the thirteenth of October
• one thirteenth of the budget
- thirteenth adj
• the thirteenth caller
- thirteenth adv
• She finished thirteenth.
• the nation's thirteenth largest city