phonautograph

English

Etymology

phono- +‎ auto- +‎ -graph

Pronunciation

• (Received Pronunciation) IPA^(key): /fənɔːtəɡɹɑːf/
• (US) IPA^(key): /fənɔtəɡɹæf/
  • (cot–caught merger) IPA^(key): /fənɑtəɡɹæf/

Noun

phonautograph (plural phonautographs)

1. (historical) A device for recording sound vibrations in a visible form.