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Definition of: acoustic
(ə·ks′tik, ə·kous′-) adjective
1. Pertaining to the act or sense of hearing, the science of sound, or the sound heard.
2. Designed to deaden, enhance, or otherwise modify sound.
3. Having no electronic amplification, as a musical instrument. Also a·cous′ti·cal. [<F acoustique <Gk. akoustikos pertaining to hearing < akouein hear]
—a·cous′ti·cal·ly adverb
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