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.

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