PHONAUTOGRAPHS
Noun
phonautographs
plural of phonautograph
Anagrams
• anthropophagus
Source: Wiktionary
PHONAUTOGRAPH
Pho*nau"to*graph, n. Etym: [Phono- + Gr. -graph.] (Physics)
Definition: An instrument by means of which a sound can be made to produce
a visible trace or record of itself. It consists essentially of a
resonant vessel, usually of paraboloidal form, closed at one end by a
flexible membrane. A stylus attached to some point of the membrane
records the movements of the latter, as it vibrates, upon a moving
cylinder or plate.
Source: Webster’s Unabridged Dictionary 1913 Edition