from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Hydrated chromium potassium sulfate, CrK(SO4)2·12H2O, a toxic violet-red to black crystalline compound, used in tanning, as a mordant, and in photography.

from The Century Dictionary.

  • noun A erystallizable double salt (K2SO4 + Cr2(SO4)3 + 24H2O) formed of the sulphates of chromium and potassium: a by-product in the manufacture of artificial alizarin, used in dyeing and calico-printing.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a violet-colored salt used in hide tanning and as a mordant in dyeing


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