Roccellic
Roc`cel´lic
a. | 1. | (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. |
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.