phenylalanine
noun
phe·nyl·al·a·nine
| \ ˌfe-nᵊl-ˈa-lə-ˌnēn
, ˌfē-\
, ˌfē-\
Definition of phenylalanine
: an essential amino acid C9H11NO2 that is converted in the normal body to tyrosine
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More Definitions for phenylalanine
phenylalanine
noun
phe·nyl·al·a·nine
| \ ˌfen-ᵊl-ˈal-ə-ˌnēn, ˌfēn-
\
\
Medical Definition of phenylalanine
: an essential amino acid C9H11NO2 that is obtained in its levorotatory L-form by the hydrolysis of proteins (as lactalbumin), that is essential in human nutrition, and that is converted in the normal body to tyrosine
—abbreviation Phe
— see phenylketonuria, phenylpyruvic acid