I. |ōd.+ noun
( -s )
Etymology: Greek ōtakoustein to listen, eavesdrop (from ōt- ot- + akoustos heard, audible) + English -ic — more at acoustic
: an otacoustic instrument
II. adjective
Etymology: French otacoustique, from Greek ōtakoustein to listen, eavesdrop + French -ique -ic
: assisting the sense of hearing