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单词 nepheloid
释义

nepheloidadj.

Brit. /ˈnɛfəlɔɪd/, U.S. /ˈnɛfəˌlɔɪd/
Origin: A borrowing from Latin. Etymon: Latin nepheloides.
Etymology: < post-classical Latin nepheloides (1713 or earlier) < ancient Greek νεϕελοειδής cloudy (of urine) < νεϕέλη cloud (see nephelo- comb. form) + -οειδής -oid suffix.
1. Medicine. Of urine: cloudy. Obsolete. rare.Apparently only attested in dictionaries or glossaries.
ΚΠ
1848 R. Dunglison Med. Lexicon (ed. 7) 575/1 Nepheloid, an epithet applied to the urine when it is cloudy.
1885 Cassell's Encycl. Dict. V. i Nepheloid, clouded; a term applied to cloudy urine.
2. Oceanography and Limnol. Of sea or lake water: turbid. Chiefly in nepheloid layer n. a layer of water, typically near the bottom, containing suspended mineral particles and organic matter.
ΘΚΠ
the world > the earth > water > sea or ocean > [adjective] > cloudy
nepheloid1965
the world > the earth > water > sea or ocean > region of sea or ocean > [noun] > specific layers
laminarian zone1851
stratosphere1932
troposphere1932
scattering layer1942
sound channel1946
psychrosphere1956
thermosphere1956
Ekman layer1957
thermo-halocline1964
nepheloid layer1965
1965 M. Ewing & E. M. Thorndike in Science 12 Mar. 1291/1 Strong background haze in some of our ocean bottom photographs has been difficult to explain by any cause other than clouded (nepheloid) water.
1965 Science 12 Mar. 1291/2 The degree to which the water is nepheloid.
1965 Science 12 Mar. 1291/3 A sample of 200 liters obtained from the nepheloid layer was found..to contain some organisms and about 0·50 g of suspended lutite.
1972 Ettreim & Ewing in A. L. Gordon Stud. Physical Oceanogr. II. 123 The turbulence associated with the vigorous bottom currents of the western North Atlantic maintains a nepheloid layer with an average thickness of one kilometer.
1997 Limnol. & Oceanogr. 42 839/1 A region of very low transmission..in deep water farthest from shore probably was a northward intrusion of a benthic nepheloid layer that develops in western Lake Superior during summer stratification.
This entry has been updated (OED Third Edition, September 2003; most recently modified version published online March 2022).
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adj.1848
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