auxetophone/ˈɔːksətəfəʊn/EtymologyFormed from Ancient Greek αὐξητός (auxētós, “that can be increased”) + φωνή (phōnḗ, “sound”).nounA pneumatic type of sound-playback device used in the early part of the twentieth century.“It was something that had come out during the séance tonight, none of which Madame Eskimoff had any direct memory of, although like all T.W.I.T.-sanctioned sittings, it had been recorded by means of a Parsons-Short Auxetophone.”