Webster's Revised Unabridged Dictionary · 1913

Fumaric

Fumaric , adjective

(Chemistry) Pertaining to, or derived from, fumitory (Fumaria officinalis).
Collocations (1)
Fumaric acid (Chemistry) , 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.