| 1. | pertaining to the sense or organs of hearing, to sound, or to the science of sound. |
| 2. | (of a building material) designed for controlling sound. |
| 3. | Music.
|
| 4. | Obsolete. a remedy for deafness or imperfect hearing. |
acoustic a·cous·tic (ə-k&oomacr;'stĭk) or a·cous·ti·cal (-stĭ-kəl)
adj.
Of or relating to sound, the sense of hearing, or the perception of sound.
acoustics a·cous·tics (ə-k&oomacr;'stĭks)
n.
The scientific study of sound, especially of its generation, transmission, and reception.