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单词 redescending
释义

redescendingadj.

Brit. /ˌriːdᵻˈsɛndɪŋ/, U.S. /ˌridəˈsɛndɪŋ/, /ˌridiˈsɛndɪŋ/
Origin: Formed within English, by derivation. Etymons: redescend v., -ing suffix2.
Etymology: < redescend v. + -ing suffix2.
1. That descends again.
ΘΚΠ
the world > movement > motion in a certain direction > downward motion > [adjective] > again
redescending1883
1883 R. L. Stevenson Treasure Island iii. xiv. 113 Only the rustle of the redescending birds..disturbed the langour of the afternoon.
1893 J. K. Hewison Isle of Bute I. 3 Situated between..these Scots and the redescending Picts of North Caledonia at one time,..Bute seems to have been turned into a blood-stained arena.
1943 Amer. Maritime Cases 21 521 Because of the density of the redescending fog, he no longer knew where he was.
1968 G. R. Cooper Invention of Sewing Machine in U.S. National Museum Bull. 254 ii. 36/2 The horizontal needle passed through this loop forming another loop beyond, which was retained until the redescending vertical needle enchained it.
2. Statistics. Of a function or curve: having two domains over which it decreases, separated by a domain near the origin over which it increases.Used with reference to a particular category of estimators.
ΚΠ
1974 Jrnl. Amer. Statist. Assoc. 69 272/2 Hampel's M-estimators with piecewise-linear redescending ψ-functions.
2003 W. E. Ferson in G. M. Constantinides et al. Handbk. Econ. Finance I. b xii. 762 The redescending influence curves used in robust statistics.
This entry has been updated (OED Third Edition, September 2009; most recently modified version published online March 2022).
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adj.1883
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