| 单词 | cardinal number |
| 释义 | cardinal number 1. Also called cardinal numeral. any of the numbers that express amount, as one, two, three, etc. (distinguished from ordinal number). 2. Also called potency, power. Math. 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] |
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