enkephalin
en·kep·ha·lin
noun
Origin
From Ancient Greek ἐγκέφαλος (enképhalos, “brain”) + -in.
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.