ACOUSTIC

ACOUS'TIC, adjective [Gr. to hear.]Pertaining to the ears, to the sense of hearing, or to the doctrine of sounds.Acoustic duct, in anatomy, the meatus auditorius, or external passage of the ear.Acoustic vessels, in ancient theaters, were brazen tubes or vessels, shaped like ab bell, used to propel the voice of the actors, so as to render them audible to a great distance; in some theaters at the distance of 400 feet.Acoustic instrument, or auricular tube, called in popular language, a speaking trumpet.Acoustics, or acousmatics, was a name given to such of the disciples of Pythagoras, as had not completed their five years probation.

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A‐cous″tic (#; 277), a. [[F. acoustique, Gr. � relating to hearing, fr. � to hear.]] 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.