\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.