Cit″ric (?), a. [Cf. F. citrique. See Citron.] (Chem.) Of, pertaining to, or derived from, the citron or lemon; as, citric acid.
Citric acid(Chem.), an organic acid, C3H4OH.(CO2H)3, extracted from lemons, currants, gooseberries, etc., as a white crystalline substance, having a pleasant sour taste.