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单词 enumerable
释义

enumerableadj.

/ɪˈnjuːmərəb(ə)l/
Etymology: < enumera- (in enumerate v.) + -able suffix.
That can be enumerated; having a definite number; numerable; spec. in Mathematics = denumerable adj.
ΘΚΠ
the world > relative properties > number > enumeration, reckoning, or calculation > [adjective] > numerable or reckonable
numbrablea1382
numberablea1500
computativea1538
measurable1565
numerable1570
countable1581
accountable1589
computable1610
numerous1638
reckonable1657
summable1718
calculable1742
enumerable1889
scorable1964
1889 in Cent. Dict.
1907 E. W. Hobson Theory of Functions of Real Variable ii. 66 An aggregate which contains an indefinitely great number of elements is said to be enumerable, or countable (abzählbar, dénombrable), when the aggregate is such that a (1, 1) correspondence can be established between the elements and the set of integral numbers 1, 2, 3, [etc.].
a1910 W. James Some Probl. Philos. (1911) xi. 171 The terms are not ‘enumerable’ in that order.
1940 A. J. Ayer Found. Empirical Knowl. ii. 124 If the sense-data do not appear to be enumerable, they really are not enumerable.
1968 P. A. P. Moran Introd. Probability Theory i. 1 We suppose that the number of ways in which the event can occur is either finite.., or ‘enumerable’, i.e. that the events can be numbered off, or put into one-to-one correspondence with the integers.

Derivatives

eˈnumerably adv.
ΘΚΠ
the world > relative properties > number > enumeration, reckoning, or calculation > [adverb]
accountably1646
enumerably1968
1968 P. A. P. Moran Introd. Probability Theory i. 4 If the number of Ei is enumerably infinite, the number of Ai is non-enumerably infinite.
This entry has not yet been fully updated (first published 1891; most recently modified version published online June 2018).
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adj.1889
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