Resembling or containing bice pigment; somewhat blue or greenish in color from bice.
From 'bice' (the pigment) plus the suffix '-y' (meaning having the quality of). This informal adjective developed to describe the particular blue-green hue that bice pigments produced.
Old paintings sometimes look bichy in certain areas where the bice pigment has oxidized differently over centuries—art conservators actually use this discoloration to date paintings and understand their chemical history!
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