%tartaric%

a. [ Pyro- + tartaric. ] (Chem.) Pertaining to, or designating, an acid obtained as a white crystalline substance by the distillation of tartaric acid. [ 1913 Webster ]

a. [ Pyro- + tri- + tartaric. ] (Chem.) Designating an acid which is more commonly called uric acid. [ 1913 Webster ]

a. (Chem.) Of or pertaining to tartar; derived from, or resembling, tartar. [ 1913 Webster ]

Tartaric acid. (a) An acid widely diffused throughout the vegetable kingdom, as in grapes, mountain-ash berries, etc., and obtained from tartar as a white crystalline substance, C2H2(OH)2.(CO2H)2, having a strong pure acid taste. It is used in medicine, in dyeing, calico printing, photography, etc., and also as a substitute for lemon juice. Called also dextro-tartaric acid. (b) By extension, any one of the series of isomeric acids (racemic acid, levotartaric acid, inactive tartaric acid) of which tartaric acid proper is the type. [ 1913 Webster ]