oxaloacetic acid

== English == === Etymology === From oxalo- +‎ acetic acid. === Noun === oxaloacetic acid (uncountable) One of the constituents of the citric acid cycle, formed by the oxidation of malic acid and via the transamination of aspartic acid; an intermediate in the synthesis of amino acids and the metabolism of carbohydrates (organic chemistry) a colourless crystalline organic carboxylic acid, butan-2-one-1,4-dicarboxylic acid, COOH.CH2.CO.COOH ==== Coordinate terms ==== oxaloacetate (coordinate as a base versus an acid, but synonymous in the practical sense that the conjugate base and conjugate acid coexist in solution)