thirty-first

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Adjective

1. cln en 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.

Abbreviations

• 31st, 31^st

Noun

thirty-first (plural thirty-firsts)

1. cln en One of thirty-one equal parts of a whole.

   A thirty-first of 620 is 20.

Synonyms

• thirty-oneth

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