/ Dictionary / Index A acoustic guitar: Meaning and Definition of Find definitions for: acous'tic guitar' Pronunciation: [key] a traditional, unamplified guitar. Also calledCf. electric guitar. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. acoustic feedback acoustician Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language