Li·chen·ic a. Of, pertaining to, or obtained from, lichens.
Lichenic acid. (a) An organic acid, C14H24O3, obtained from Iceland moss. (b) An old name of fumaric acid.
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Fu·mar·ic a. Chem. Pertaining to, or derived from, fumitory (Fumaria officinalis).
Fumaric acid Chem., a widely occurring organic acid, extracted from fumitory as a white crystallline substance, C2H2(CO2H)2, and produced artificially in many ways, as by the distillation of malic acid; boletic acid. It is found also in the lichen, Iceland moss, and hence was also called lichenic acid.
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