Category:Otacoustic

Ot`a*cous"tic, a. Etym: [oto- + acoustic: cf. F. otacoustique.]

Defn: assisting the sense of hearing; as, an otacoustic instrument.

Otacoustic; otacousticon Ot`a*cous"tic, ot`a*cous"ti*con, n.

Defn: an instrument to facilitate hearing, as an ear trumpet.