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单词 cardinal number
释义

WordReference Random House Learner's Dictionary of American English © 2024
ˈcar•di•nal ˈnum•ber, n. [countable]
  1. Mathematicsany of the numbers that express amount, as one, two, three.

WordReference Random House Unabridged Dictionary of American English © 2024
cardinal number, 
    1. MathematicsAlso called cardinal numeral. any of the numbers that express amount, as one, two, three, etc. (distinguished from ordinal number).
    2. MathematicsAlso called potency, power. 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.
    • 1585–95

Collins Concise English Dictionary © HarperCollins Publishers::
cardinal number, cardinal numeral n
  1. a number denoting quantity but not order in a set
    Sometimes shortened to: cardinal

Compare ordinal number
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