/ Dictionary / Index A acoustic feedback: Meaning and Definition of Find definitions for: acous'tic feed'back Pronunciation: [key] — Electronics. Electronics. (in an audio system, esp. a public-address system) the feedback of sound from a loudspeaker to a microphone, often resulting in a whistling noise caused by electrical oscillations. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. acoustic feature acoustic guitar Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language