/ Dictionary / Index E echocardiograph: Meaning and Definition of Find definitions for: ech•o•car•di•o•graph Pronunciation: (ek"ō-kär'dē-u-graf", -gräf"), [key] — n. Med. an instrument employing reflected ultrasonic waves to examine the structures and functioning of the heart. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: echocardiograph (Thesaurus) echocardiogram echo chamber Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language