geochemicadj.

Brit.

/ˌdʒiːə(ʊ)ˈkɛmɪk/,

/dʒɪəˈkɛmɪk/, U.S.

/ˌdʒioʊˈkɛmɪk/

Origin: Formed within English, by compounding. Etymons: geo- comb. form, chemic adj.

Etymology: < geo- comb. form + chemic adj. Compare German geochemisch (see geochemical adj.); the work translated in quot. 1840 uses only the noun Geochemie (see geochemistry n.).

= geochemical adj.Now chiefly in English-language texts in publications from non-English-speaking countries.

ΘΚΠ

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

geochemic1840

geochemical1882

petrochemical1913

1840 tr. C. F. Schönbein in Ann. Electr., Magnetism, & Chem. 5 236 We ought to commence by creating a geochemic comparison.

1918 E. T. Dumble Geol. E. Texas xii. 292 The transformation of this fatty material into petroleum and gas is ascribed..to some form of temperature or pressure distillation, or some process of fermentation, (geodynamic or geochemic agencies) acting on these materials after they have been entombed in the rocks.

2007 F. Widdel et al. in L. Barton & W. A. Hamilton Sulphate-reducing Bacteria ix. 272 Methane is of abiotic (geochemic, thermogenic) and microbial origin.

This is a new entry (OED Third Edition, March 2012; most recently modified version published online March 2022).

单词	geochemic
释义	geochemicadj. Brit. /ˌdʒiːə(ʊ)ˈkɛmɪk/, /dʒɪəˈkɛmɪk/, U.S. /ˌdʒioʊˈkɛmɪk/ Origin: Formed within English, by compounding. Etymons: geo- comb. form, chemic adj. Etymology: < geo- comb. form + chemic adj. Compare German geochemisch (see geochemical adj.); the work translated in quot. 1840 uses only the noun Geochemie (see geochemistry n.). = geochemical adj.Now chiefly in English-language texts in publications from non-English-speaking countries. ΘΚΠ the world > the earth > earth sciences > geology > geochemistry > [adjective] geochemic1840 geochemical1882 petrochemical1913 1840 tr. C. F. Schönbein in Ann. Electr., Magnetism, & Chem. 5 236 We ought to commence by creating a geochemic comparison. 1918 E. T. Dumble Geol. E. Texas xii. 292 The transformation of this fatty material into petroleum and gas is ascribed..to some form of temperature or pressure distillation, or some process of fermentation, (geodynamic or geochemic agencies) acting on these materials after they have been entombed in the rocks. 2007 F. Widdel et al. in L. Barton & W. A. Hamilton Sulphate-reducing Bacteria ix. 272 Methane is of abiotic (geochemic, thermogenic) and microbial origin. This is a new entry (OED Third Edition, March 2012; most recently modified version published online March 2022). < adj.1840
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