'C2H2CO2H2' definitions:

Definition of 'C2H2CO2H2'

From: GCIDE
  • Fumaric \Fu*mar"ic\, a. (Chem.) Pertaining to, or derived from, fumitory ({Fumaria officinalis}). [1913 Webster]
  • 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. [1913 Webster]