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单词 cardinal number
释义

cardinal number


noun

Also called cardinal numeral. any of the numbers that express amount, as one, two, three, etc. (distinguished from ordinal number).
Also called potency, power. Mathematics. a number or symbol analogous to the number of elements in a finite set, being identical for two sets that can be placed into one-to-one correspondence: The cardinal number of the set a1, a2, … an is n.

Origin of cardinal number

First recorded in 1585–95

Words nearby cardinal number

cardinal beetle, cardinalfish, cardinal flower, cardinality, cardinal ligament, cardinal number, cardinal numbers, cardinal point, cardinal points, cardinals, cardinal sign
Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for cardinal number

cardinal number

cardinal numeral


noun

a number denoting quantity but not order in a setSometimes shortened to: cardinal
maths logic
  1. a measure of the size of a set that does not take account of the order of its membersCompare natural number
  2. a particular number having this function
Compare ordinal number
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

Scientific definitions for cardinal number

cardinal number
[ kärdn-əl ]

A number, such as 3, 11, or 412, used in counting to indicate quantity but not order. Compare ordinal number.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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