Methylacetic acid; ethylformic acid; found in sweat; elevated in cases of ketotic hyperglycinemia and in cases of biotin deficiency. SYN: propanoic acid.
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pro·pi·on·ic acid .prō-pē-.än-ik- n a liquid sharp-odored fatty acid C3H6O2 found in milk and distillates of wood, coal, and petroleum called also propanoic acid
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pro·pi·on·ic ac·id (pro″pe-onґik) a three-carbon saturated fatty acid that can be fermented by several species of bacteria; in mammals it can be converted to the thioester propionyl CoA, a metabolic intermediate.Medical dictionary. 2011.