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单词 geochemistry
释义

geochemistryn.

Brit. /ˌdʒiːə(ʊ)ˈkɛmᵻstri/, /dʒɪəˈkɛmᵻstri/, U.S. /ˌdʒioʊˈkɛməstri/
Origin: Formed within English, by compounding; perhaps modelled on a German lexical item, or perhaps modelled on a French lexical item, or perhaps modelled on a Latin lexical item. Etymons: geo- comb. form, chemistry n.
Etymology: < geo- comb. form + chemistry n., after German Geochemie (1817 or earlier), French géochimie (1803 or earlier), or post-classical Latin geochymia (1800). Compare earlier geochemical adj.
The branch of science concerned with the chemical composition of the earth and the natural chemical processes which have affected the substance of the earth; (also) the chemical properties and composition of a specified locality, rock, etc. Also in extended use with reference to the moon and other celestial objects.
ΘΚΠ
the world > the earth > earth sciences > geology > geochemistry > [noun]
geochemistry1888
petrochemistry1937
1888 Nature 23 Aug. 387/2 In the third part, ‘Geochemistry’, or chemical geology, we have a short sketch of the present state of petrography..followed by remarks on petrogeny.
1903 Carnegie Inst. Yearbk. 1902 27 The problems of geophysics and geochemistry involve the applications of pure physics and pure chemistry from the minutest parts of the earth to the mass of the earth as a whole.
1948 Q. Jrnl. Geol. Soc. 103 141 Petrogenesis..will become an integral part of a wider science of geochemistry.
1961 Jrnl. Geol. (Chicago) 69 582/1 Elements with vastly different chemistries and geochemistries.
1972 Nature 31 Mar. 197/2 Their [sc. lunar rocks'] geochemistry otherwise shares more aspects with terrestrial alkalic than tholeiitic rocks.
1991 Antiquity 65 999/2 All one ever wanted to know..about the geology, geochemistry and hydrogeology of the island.
2006 New Yorker 9 Jan. 37/2 He has an office in the university's geochemistry building.
This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022).
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n.1888
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