Dictionary

enkephalin

noun en·keph·a·lin \in-ˈke-fə-lən, -(ˌ)lin, en-\

Definition of ENKEPHALIN

:  either of two pentapeptides with opiate and analgesic activity that occur naturally especially in the brain and have a marked affinity for opiate receptors — compare endorphin

Origin of ENKEPHALIN

enkephal- (alteration of encephal-) + -in
First Known Use: 1975

enkephalin

noun en·keph·a·lin \in-ˈkef-ə-lən, -(ˌ)lin\   (Medical Dictionary)

Medical Definition of ENKEPHALIN

:  either of two pentapeptides with opiate and analgesic activity that occur naturally in the brain and have a marked affinity for opiate receptors: a :  leucine-enkephalin b :  methionine-enkephalin—compare endorphin

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