英和和英

発音

形容詞

twenty-first (not comparable)

1. The ordinal form of the number twenty-one.

別の表記

• 21st, 21, XXI

派生語

名詞

twenty-first (plural twenty-firsts)

1. The person or thing in the twenty-first position.
2. One of twenty-one equal parts of a whole, usually written ⁄₂₁.
3. (informal) A party to celebrate a twenty-first birthday.

同意語

• (nonstandard, humorous) twenty-oneth

派生語

参考

• previous: twentieth, next: twenty-second