/ Dictionary / Index M Met enkephalin: Meaning and Definition of Find definitions for: Met' enkeph'alin Pronunciation: (met), [key] — (sometimes l.c.) See under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. metencephalon meteor Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language