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FIFTEENTH definition: next after the fourteenth; being the ordinal number for 15. See examples of fifteenth used in a sentence.

(Definition of fifteenth from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

Feb 24, 2026 · Noun fifteenth (plural fifteenths) The person or thing in the fifteenth position. One of fifteen equal parts of a whole. (music) The interval comprising two octaves.

1. next after the fourteenth; being the ordinal number for 15. 2. being one of 15 equal parts. n. 3. a fifteenth part, esp. of one (1/15). 4. the fifteenth member of a series.

The fourteenth and fifteenth amendments to the Fedc al Constitution were ratified in 1870, and the state was formally readmitted into the Union on the 23rd of February of that year.

The meaning of FIFTEENTH is being number 15 in a countable series. How to use fifteenth in a sentence.