- (of a set) the cardinal number indicating the number of elements in the set.
Origin of cardinality
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- 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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for cardinality
Online Etymology Dictionary, © 2010 Douglas Harper