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Webster 1913 Edition
Roccellic
Roc-cel′lic
,Adj.
[F.
roccellique
, fr. roccelle
archil, It. & NL. roccella
, fr. It. rocca
a rock, because archil grows on rock.] (Chem.)
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
.