adj, noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   One of fifty-one equal parts of a whole.

   "A fifty-first of 1020 is 20."

Adjective

1. 1
   The ordinal form of the number fifty-one, describing a person or thing in position number 51 of a sequence. not-comparable

   "The answer appears on the fifty-first page of the book."

Synonyms

All synonyms

51stfifty-oneth

Example

More examples

"The twentieth of February is the fifty-first day of the year."

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.