acoustic impedance: Meaning and Definition of

acous'tic imped'ance

Pronunciation: [key]
— Acoustics. Acoustics.
  1. the total reaction of a medium to the transmission of sound through it, expressed as the ratio of sound pressure to particle velocity at a given point in the medium.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.