The Collaborative International Dictionary
itaconic
Pyrocitric \Pyr`o*cit"ric\, a. [Pyro- + citric: cf. F. pyrocitrique.] (Chem.) Pertaining to, or designating, any one of three acids obtained by the distillation of citric acid, and called respectively citraconic, itaconic, and mesaconic acid.
Wiktionary
itaconic
a. Of or pertaining to itaconic acid or its derivatives