a. [ Cf. F. citrique. See Citron. ] (Chem.) Of, pertaining to, or derived from, the citron or lemon; as, citric acid. [ 1913 Webster ]
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. [ 1913 Webster ]