noun, plural car·di·nal·i·ties. Mathematics.
(of a set) the cardinal number indicating the number of elements in the set.
Origin of cardinality
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
maths the property of possessing a cardinal number
maths logic (of a class) the cardinal number associated with the given class. Two classes have the same cardinality if they can be put in one-to-one correspondence
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