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单词 prasochrome
释义

prasochromen.

Brit. /ˈpreɪzə(ʊ)krəʊm/, U.S. /ˈpreɪzəˌkroʊm/
Origin: A borrowing from German. Etymon: German Prasochrom.
Etymology: < German Prasochrom (X. Landerer 1850, in Neues Jahrb. f. Min. 313) < ancient Greek πρασο- , combining form (in e.g. πρασοκουρίς prasocoride n.) of πράσον leek (see prasine n. and adj.) + German -chrom -chrome comb. form.
Mineralogy. rare.
A green mineral which is an alteration product of chromite and is considered to be a variety of calcite.
ΚΠ
1854 J. D. Dana Syst. Mineral. (ed. 4) (App.) 501 Prasochrome... A result of the alteration of chromic iron on the island Scyro, Grecian Archipelago, forming a dull green incrustation. Contains carbonate of lime colored by oxyd or chrome.
1900 Mineral. Mag. 12 390 Prasochrome... A dark green alteration product coating chromite.
This entry has been updated (OED Third Edition, March 2007; most recently modified version published online March 2022).
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n.1854
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