• (a.) Pertaining, or suited, to the audition of small sounds; fitted to assist hearing. • (n.) An instrument for making faint sounds audible, as to a partially deaf person.
Mi`cro·cous'tic adjective [ Micro- + acoustic : confer French microcoustique , micracoustique .] Pertaining, or suited, to the audition of small sounds; fitted to assist hearing.