/ Dictionary / Index E encephalosis: Meaning and Definition of Find definitions for: en•ceph•a•lo•sis Pronunciation: (en-sef"u-lō'sis), [key] — n. Pathol. organic disease of the brain. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. encephalopathy encephalotomy Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language