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Definition of Tartaric acid
1. Noun. An acid found in many fruits; used in soft drinks and confectionery and baking powder.
Medical Definition of Tartaric acid
1. HOOC-CHOH-CHOH-COOH; Dihydroxysuccinic acid;made from crude tartar; a laxative and refrigerant; used in the manufacture of various effervescing powders, tablets, and granules. (05 Mar 2000)