otacousticon

== English == === Etymology === From combining form of Ancient Greek οὖς (oûs, “ear”) + ἀκουστικόν (akoustikón), neuter of ἀκουστικός (akoustikós, “acoustic”). === Pronunciation === (UK) IPA(key): /əʊtəˈkuːstɪkɒn/ === Noun === otacousticon (plural otacousticons) (now rare) An instrument to aid hearing, such as an ear trumpet or hearing aid. , New York Review of Books, 2001, p.69: […] Gyges' invisible ring, or some rare perspective glass, or otacousticon, which would so multiply species that a man might hear and see all at once […].