GNU Collaborative International Dictionary of English

last match results

Found 2 definitions

1.       
   Acoustic , 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.
   1913 Webster
   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.
   1913 Webster
   
         
       

2.       
   Acoustic, n. A medicine or agent to assist hearing.
   1913 Webster