From Wiktionary
[change] Pronunciation
[change] Determiner
(number) (ordinal thirteenth)
- Thirteen is the number that is after twelve and before fourteen. In numerals, it is 13.
- Thirteen donuts makes a baker's dozen.
- The thirteen are never alone.
- The number 13.
- Three and ten makes thirteen.
- To be thirteen years old.
- This girl is thirteen.