isovaleric acid
noun
iso·va·ler·ic acid
| \ ˌī-sō-və-ˌlir-ik-
, -ˌler-
\
, -ˌler-
\
Medical Definition of isovaleric acid
: a liquid acid C5H10O2 that has a disagreeable odor, that occurs especially in valerian root in the free state and in some essential oils and marine-animal oils in the form of esters, and that is used chiefly in making esters for use in flavoring materials