phonautograph

noun

phon·​au·​to·​graph

fōˈnȯtəˌgraf,

-rȧf

: an instrument by which a sound can be made to produce a visible record of itself

phonautographic

⸗¦⸗⸗¦grafik

adjective

phonautographically

-fə̇k(ə)lē

adverb

Word History

Etymology

phon- + aut- + -graph

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