thirtyfirstとは 意味・読み方・使い方

形容詞

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.

使用する際の注意点

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

略語s

• 31st, 31

名詞

thirty-first (plural thirty-firsts)

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

   A thirty-first of 620 is 20.

同意語

• thirty-oneth