/ Dictionary / Index E encephalon: Meaning and Definition of Find definitions for: en•ceph•a•lon Pronunciation: (en-sef'u-lon", -lun), [key] — pl. -la the brain. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: encephalon (Thesaurus) encephalomyocarditis encephalopathy Related Content Daily Word Quiz: crockery Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language