thirty-first

English

English ordinal numbers
 <  30th 31st 32nd  > 
    Cardinal : thirty-one
    Ordinal : thirty-first

Adjective

thirty-first

  1. The ordinal form of the number thirty-one, describing a person or thing in position number 31 of a sequence.
    The answer appears on the thirty-first page of the book.
    She finished thirty-first in the race.

Usage notes

English ordinal numbers may function as either an adjective or as a noun, and almost never appear in the plural.

Abbreviations

Translations

Noun

thirty-first (plural thirty-firsts)

  1. One of thirty-one equal parts of a whole.
    A thirty-first of 620 is 20.

Synonyms

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