methionine-enkephalin

noun
methionine-en·​keph·​a·​lin | \ -en-ˈkef-ə-lin How to pronounce methionine-enkephalin (audio) \

Medical Definition of methionine-enkephalin

: a pentapeptide having a terminal methionine residue that is one of the two enkephalins occurring naturally in the brain

called also Met-enkephalin