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Definition of Oxaloacetic acid
1. Noun. An acid formed by oxidation of maleic acid (as in metabolism of fats and carbohydrates).
Medical Definition of Oxaloacetic acid
1. HOOC-CO-CH2COOH;a ketodicarboxylic acid and important intermediate in the tricarboxylic acid cycle; the product formed when l-aspartic acid acts as an amine donor in transamination reactions. Synonym: ketosuccinic acid, oxosuccinic acid. (05 Mar 2000)