orcin
nounEtymology From French orcine, from New Latin orcina, from Dutch orseille, from French orseille, from Old French orchel, orseil, from Old Catalan orxella (influenced by dialectal Arabic [script needed] ('urjālla)), from Italian oricello, from Latin ōricilla, diminutive of ōricula (variant of auricula), both diminutives of auris (“ear”)) + illa (a double diminutive suffix) or from auris (“ear”) + cula + illa. The name of the dye was influenced by the visual resemblance of the lichen used in production to a small ear.
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Chemistry, Natural sciences, Organic chemistry, Physical sciences The organic compound 3,5-dihydroxytoluene, found in many lichens and synthesizable from toluene.