Mi`cro*cous"tic (?), a. [Micro- + acoustic: cf. F. microcoustique, micracoustique.]
Pertaining, or suited, to the audition of small sounds; fitted to assist hearing.
© Webster 1913.
Mi`cro*cous"tic, n.
An instrument for making faint sounds audible, as to a partially deaf person.
© Webster 1913.