geochemicaladj.

Brit.

/ˌdʒiːə(ʊ)ˈkɛmᵻkl/,

/dʒɪəˈkɛmᵻkl/, U.S.

/ˌdʒioʊˈkɛmək(ə)l/

Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: geo- comb. form, chemical adj.

Etymology: < geo- comb. form + chemical adj., after German geochemisch (1843 or earlier). Compare earlier geochemic adj. and later geochemistry n.

Of or relating to geochemistry; of or relating to the natural chemical composition and processes of the earth.

ΘΚΠ

the world > the earth > earth sciences > geology > geochemistry > [adjective]

geochemic1840

geochemical1882

petrochemical1913

1882 Nature 6 July 237/2 The geochemical conditions of Bohemian chalk-formation.

1941 Amer. Jrnl. Sci. 239 161 (title) Geochemical calculations concerning the total mass of sediments in the earth.

1957 Times 20 Dec. 13/1 Developments in geochemical prospecting—the use of chemical analyses of soil to detect underlying deposits of minerals.

1971 Nature 10 Sept. 145/2 The geochemical composition of the Moon and planets.

2001 Metro (Toronto) 5 Feb. 11/1 The diamond industry's best hope is geo-chemical fingerprinting of individual rough diamonds.

Derivatives

ˌgeoˈchemically adv.

ΚΠ

1914 Jrnl. Franklin Inst. 177 274 When the organic débris consists largely of resinous and waxy plant products..the geodynamically and geochemically altered material..forms canneloid coals.

1957 G. E. Hutchinson Treat. Limnol. I. viii. 559 This Rb:K ratio is by no means geochemically impossible.

2005 C. Mann 1491 iii. viii. 272 So toxic is the groundwater, a U.S.-Mexican research team remarked in 2002, that the Maya realm was ‘geochemically hostile’ to urban colonization.

This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022).

单词	geochemical
释义	geochemicaladj. Brit. /ˌdʒiːə(ʊ)ˈkɛmᵻkl/, /dʒɪəˈkɛmᵻkl/, U.S. /ˌdʒioʊˈkɛmək(ə)l/ Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: geo- comb. form, chemical adj. Etymology: < geo- comb. form + chemical adj., after German geochemisch (1843 or earlier). Compare earlier geochemic adj. and later geochemistry n. Of or relating to geochemistry; of or relating to the natural chemical composition and processes of the earth. ΘΚΠ the world > the earth > earth sciences > geology > geochemistry > [adjective] geochemic1840 geochemical1882 petrochemical1913 1882 Nature 6 July 237/2 The geochemical conditions of Bohemian chalk-formation. 1941 Amer. Jrnl. Sci. 239 161 (title) Geochemical calculations concerning the total mass of sediments in the earth. 1957 Times 20 Dec. 13/1 Developments in geochemical prospecting—the use of chemical analyses of soil to detect underlying deposits of minerals. 1971 Nature 10 Sept. 145/2 The geochemical composition of the Moon and planets. 2001 Metro (Toronto) 5 Feb. 11/1 The diamond industry's best hope is geo-chemical fingerprinting of individual rough diamonds. Derivatives ˌgeoˈchemically adv. ΚΠ 1914 Jrnl. Franklin Inst. 177 274 When the organic débris consists largely of resinous and waxy plant products..the geodynamically and geochemically altered material..forms canneloid coals. 1957 G. E. Hutchinson Treat. Limnol. I. viii. 559 This Rb:K ratio is by no means geochemically impossible. 2005 C. Mann 1491 iii. viii. 272 So toxic is the groundwater, a U.S.-Mexican research team remarked in 2002, that the Maya realm was ‘geochemically hostile’ to urban colonization. This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022). < adj.1882
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