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definitions

cardinality

[ kahr-dn-al-i-tee ]
/ ˌkɑr dnˈæl ɪ ti /

noun, plural car·di·nal·i·ties. Mathematics.

(of a set) the cardinal number indicating the number of elements in the set.

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Nearby words

  1. cardinal virtues,
  2. cardinal vowel,
  3. cardinal vowels,
  4. cardinalate,
  5. cardinalfish,
  6. cardinals,
  7. carding,
  8. carding machine,
  9. cardio-,
  10. cardio-omentopexy

Origin of cardinality

First recorded in 1930–35; cardinal + -ity
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for cardinality

cardinality

/ (ˌkɑːdɪˈnælɪtɪ) /

noun

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

cardinality

n.

1520s, "condition of being a cardinal," from cardinal (n.) + -ity. Mathematical sense is from 1935 (see cardinal (adj.)).

Online Etymology Dictionary, © 2010 Douglas Harper