Acoustic
WordNet
adjective
(1) Of or relating to the science of acoustics
"Acoustic properties of a hall"
noun
(2) A remedy for hearing loss or deafness
WiktionaryText
Etymology
French acoustique < .
Adjective
- Pertaining to the sense of hearing, the organs of hearing, or the science of sounds; auditory.
- Naturally producing or produced by an instrument without electrical amplification, as an acoustic guitar or acoustic piano.