thir·teen 
/ˌθɚˈti:n/ noun
plural thir·teens /ˌθɚˈti:n/ noun [count] : the number 13
— thirteen adjective
▪ thirteen students
▪ thirteen students
— thirteen pronoun
▪ All thirteen (of them) passed the exam.
▪ All thirteen (of them) passed the exam.
— thir·teenth /ˌθɚˈti:nθ/ noun, plural thir·teenths [count]
▪ the thirteenth of October ▪ one thirteenth of the budget
/ˌθɚˈti:nθ/ noun, plural thir·teenths [count] ▪ the thirteenth of October ▪ one thirteenth of the budget
— thirteenth adjective
▪ the thirteenth caller
▪ the thirteenth caller
— thirteenth adverb
▪ She finished thirteenth. ▪ the nation's thirteenth largest city
▪ She finished thirteenth. ▪ the nation's thirteenth largest city
