cardinal number(redirected from Cardinal numbers)
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Related to Cardinal numbers: Ordinal numbers
cardinal number, numeral
1. a number denoting quantity but not order in a set
2. Maths Logic
a. a measure of the size of a set that does not take account of the order of its members
b. a particular number having this function
cardinal number[′kärd·nəl ′nəm·bər]
The number of members of a set; usually taken as a particular well-ordered set representative of the class of all sets which are in one-to-one correspondence with one another.
The cardinality of some set.