Last Updated：2025/11/19

Dictionary quizzes to help you remember vocabulary

A number used to denote quantity; a counting number; a cardinal. / (mathematics) A generalized kind of number used to denote the size of a set, including infinite sets.

音声機能が動作しない場合はこちらをご確認ください

See correct answer

cardinal number

Edit Histories（0）

Source Word

cardinal number

Noun

A number used to denote quantity; a counting number; a cardinal. / (mathematics) A generalized kind of number used to denote the size of a set, including infinite sets.

Japanese Meaning

数量を示す数、すなわち物の個数を数えるための数 / （数学において）集合の大きさを示す数、有限集合および無限集合のサイズを表す数

What is this buttons?

When writing the report, make sure to use a cardinal number to specify the exact quantity.

Google Translation / DeepL Translation

報告書を書くときは、正確な数量を示す数（基数）を必ず使ってください。

Details

Sense（1）

A number used to denote quantity; a counting number; a cardinal.

The smallest cardinal numbers are 0, 1, 2, and 3.

Google Translation / DeepL Translation

Details

Sense（2）

(mathematics) A generalized kind of number used to denote the size of a set, including infinite sets.

This cardinal number is the smallest of the infinite cardinal numbers; it is the one to which Cantor has appropriated the Hebrew Aleph with the suffix 0, to distinguish it from larger infinite cardinals. Thus the name of the smallest of infinite cardinals is ℵ₀.

Google Translation / DeepL Translation