Polyacoustic

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Polyacoustic \Pol`y*a*cous"tic\, a. [Poly- + acoustic: cf. F.
     polyacoustique.]
     Multiplying or magnifying sound. -- n. A polyacoustic
     instrument.
     [1913 Webster]