phenylacetic acid

noun
phe·​nyl·​ace·​tic acid | \ ˌfen-ᵊl-ə-ˌsēt-ik-, ˌfēn- How to pronounce phenylacetic acid (audio) \

Medical Definition of phenylacetic acid

: a crystalline acid C8H8O2 used chiefly in the manufacture of penicillin

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