ACOUSTIC

acoustic, acoustical

(adjective) of or relating to the science of acoustics; “acoustic properties of a hall”

acoustic

(noun) a remedy for hearing loss or deafness

Source: WordNet® 3.1

Etymology

Adjective

acoustic (not comparable)

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

(music) Naturally producing or produced by an instrument without electrical amplification, as an acoustic guitar or acoustic piano.

Noun

acoustic (plural acoustics)

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

Clipping of acoustic guitar.

Source: Wiktionary

A*cous"tic (#; 277), a. Etym: [F. acoustique, Gr.

Definition: Pertaining to the sense of hearing, the organs of hearing, or the science of sounds; auditory. Acoustic duct, the auditory duct, or external passage of the ear.

– Acoustic telegraph, a telegraph making audible signals; a telephone.

– Acoustic vessels, brazen tubes or vessels, shaped like a bell, used in ancient theaters to propel the voices of the actors, so as to render them audible to a great distance.

A*cous"tic, n.

Definition: A medicine or agent to assist hearing.

Source: Webster’s Unabridged Dictionary 1913 Edition