See Also: otacoustic(dictionary)

otacoustic (iou)



otacoustic noun & adjective.rare. E17.
[from Greek ot-, ous ear + akoustikos ACOUSTIC.]
A. noun. An instrument to assist hearing. E17-E18.
b. adjective. Used to assist hearing. Only in Dicts. L18-E19.
otacoustical adjective: only in E19.
otacousticon noun = OTACOUSTIC noun E17-E18.