/ Dictionary / Index A acoustic resistance: Meaning and Definition of Find definitions for: acous'tic resist'ance Pronunciation: [key] — Acoustics. Acoustics. acoustic impedance caused by the internal friction of the transmitting medium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. acoustic reactance acoustics Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language