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2 definitions found

From: Webster's Revised Unabridged Dictionary (1913)

 Chrome n. Same as Chromium.
 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.

From: WordNet (r) 2.0

 chrome alum
      n : a violet-colored salt used in hide tanning and as a mordant
          in dyeing