acoustic - definition of acoustic by The Free Dictionary
a·cous·tic (ə-ko o′stĭk) adj. also a·cous·ti·cal (-stĭ-kəl) 1. Of or relating to sound, the sense of hearing, or the science of sound. 2. a. Designed to carry sound or to aid in hearing. b. Designed to absorb or control sound: acoustic tile. 3. Music a. O...