/ Dictionary / Index E echoencephalograph: Meaning and Definition of Find definitions for: ech•o•en•ceph•a•lo•graph Pronunciation: (ek"ō-en-sef'u-lu-graf", -gräf"), [key] — n. Med. a device that employs reflected ultrasonic waves to examine the position of brain structures. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: echoencephalograph (Thesaurus) echoencephalogram echogenic Related Content Daily Word Quiz: jovial Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language