Acoustic

adj. vocal, sonic; auditory; of sound

n. science of sound; property of transmitting sound

Acoustic may refer to: In science:Acoustics, a branch of physics that studies soundMusical acoustics, the branch of acoustics that studies the physics of musicAcoustic meatus, another name for the ear canalIn music:Acoustic music, music that solely or primarily uses acoustic instrumentsAn instrument used in acoustic music (see link above), such as:Acoustic guitar, as opposed to electric guitarAcoustic bass guitar, as opposed to electric bass guitarAn album:Acoustic (Deine Lakaien album), 1995Acoustic (John Lennon album), 2004A record label:Acoustic AmericanaAcoustic DiscPiano acousticsAcoustic fingerprint
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Acoustic /acous·tic/ relating to sound or hearing. a·cous·tic or a·cous·ti·cal adj. Of or relating to sound, the sense of hearing, or the perception [more]Acoustic - Community and Resources

Noun
1. a remedy for hearing loss or deafness
(hypernym) remedy, curative, cure
Adjective
1. of or relating to the science of acoustics; "acoustic properties of a hall"
(synonym) acoustical
(pertainym) acoustics

(n.)
A medicine or agent to assist hearing.
  

(a.)
Pertaining to the sense of hearing, the organs of hearing, or the science of sounds; auditory.