noun
Origin: ME & OFr coperose < ML coperosium, prob. < *(aqua) cuprosa, lit., copper (water) < L cupreus, of copper
See copperas in American Heritage Dictionary 4
noun
Origin:
Origin: Middle English coperose, a metallic sulfate
Origin: , from Old French
Origin: , from Medieval Latin cuperōsa
Origin: , probably short for *aqua cuprōsa, copper water
Origin: , from Late Latin cuprum, copper; see copper 1
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