1. Adjective.  Pertaining to the sense of hearing, the organs of hearing, or the science of sounds; auditory.
  2. Adjective.  (music) Naturally producing or produced by an instrument without electrical amplification, as an acoustic guitar or acoustic piano.
  3. Noun.  (medicine) A medicine or other agent to assist hearing.

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This entry was last updated on RefTopia from its source on 3/20/2012.