auxetophone

== English == === Etymology === Formed from Ancient Greek αὐξητός (auxētós, “that can be increased”) + φωνή (phōnḗ, “sound”). === Pronunciation === IPA(key): /ˈɔːksətəfəʊn/ === Noun === auxetophone (plural auxetophones) (historical) A pneumatic type of sound-playback device used in the early part of the twentieth century.