/ Dictionary / Index S sonograph: Meaning and Definition of Find definitions for: son•o•graph Pronunciation: (son'u-graf", -gräf"), [key] — n. Physics. an instrument that produces a graphic representation of sound. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sonograph (Thesaurus) sonogram Sonoma Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language