(CH3)2CHCH2COOH; 3-Methylbutyric acid;a metabolic intermediate in oxidative processes; elevated in cases of isovaleric acidemia. ... (05 Mar 2000) ... 
Type: Term Pronunciation: ī′so-vă-ler′ik as′id, -lēr′ik Definitions: 1. a metabolic intermediate in oxidative processes; elevated in cases of isovaleric acidemia.