Word Study
roccellic
CIDE DICTIONARY
roccellic, a. [F. roccellique, fr. roccelle archil, It. & NL. roccella, fr. It. rocca a rock, because archil grows on rock.].
Pertaining to, or designating, a dibasic acid of the oxalic series found in archil (Roccella tinctoria , etc.), and other lichens, and extracted as a white crystalline substance C17H32O4 . [1913 Webster]
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