/ Dictionary / Index E electroencephalograph: Meaning and Definition of Find definitions for: e•lec•tro•en•ceph•a•lo•graph Pronunciation: (i-lek"trō-en-sef'u-lu-graf", -gräf"), [key] — n. Med. an instrument for measuring and recording the electric activity of the brain. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: electroencephalograph (Thesaurus) electroencephalogram electroendosmosis Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language