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cardinal number

noun

Definition of cardinal number

1 : a number (such as 1, 5, 15) that is used in simple counting and that indicates how many elements there are in an assemblage — see Table of Numbers
2 : the property that a mathematical set has in common with all sets that can be put in one-to-one correspondence with it

Examples of cardinal number in a Sentence

Recent Examples on the Web

 With the hypothesis unresolved, many other properties of cardinal numbers and infinity remain uncertain too. — Quanta Magazine, "To Settle Infinity Dispute, a New Law of Logic," 26 Nov. 2013

First Known Use of cardinal number

1591, in the meaning defined at sense 1

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More Definitions for cardinal number

cardinal number

noun

English Language Learners Definition of cardinal number

: a number (such as 1, 2, or 3) that is used in simple counting and shows quantity

See the full definition for cardinal number in the English Language Learners Dictionary

cardinal number

noun

Kids Definition of cardinal number

: a number (as 1, 5, 22) that is used in simple counting and answers the question “how many?”

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