Chrome alum (Chem.), a dark violet substance, (SO4)3Cr2.K2SO4.24H2O, analogous to, and crystallizing like, common alum. It is regarded as a double sulphate of chromium and potassium. -- Chrome green (a) The green oxide of chromium, Cr2O3, used in enamel painting, and glass staining. (b) A pigment made by mixing chrome yellow with Prussian blue. -- Chrome red, a beautiful red pigment originally prepared from the basic chromate of lead, but now made from red oxide of lead. -- Chrome yellow, a brilliant yellow pigment, PbCrO4, used by painters.

Chrome, v. t. [From Chrome, n.].

To treat with a solution of potassium bichromate, as in dyeing. [Webster 1913 Suppl.]

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OXFORD DICTIONARY

Chrome, n.
1 chromium, esp. as plating.
2 (in full chrome yellow) a yellow pigment obtained from lead chromate.

Idiom

chrome leather leather tanned with chromium salts. chrome-nickel (of stainless steel) containing chromium and nickel. chrome steel a hard fine-grained steel containing much chromium and used for tools etc.

Etymology

F, = chromium, f. Gk khroma colour

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