fu·mar·ic acid /fjʊˈmærɪk-/
  fu·mar·ic acid /fjʊˌmærɪk-/ 名詞
  富馬酸,紫堇酸,延胡索酸,反丁烯二酸
  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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  fumaric acid
       n : a colorless crystalline acid with a fruity taste; used in
           making polyester resins