English
leuenkephalin
From Leu + enkephalin.
A compound of Leu + enkephalin
Romanian leu ‘lion’
English Leu
Proto-Indo-European *gʰebʰ-l̥ ‘head’
Proto-Hellenic *kʰepʰəlā́
Ancient Greek κεφᾰλή ‘head’
Ancient Greek ἐγκέφαλος ‘brain’
English enkephalin
Today it means
noun An endogenous opioid peptide neurotransmitter found naturally in the brains of many animals, including humans; one of the two forms of enkephalin (the other being metenkephalin).
Language periods are conventional ranges, not dates for this word.
Etymograph / leuenkephalin