phonoscope

[ foh-nuh-skohp ]

noun

1. an instrument for making visible the motions or properties of a sounding body.
2. a device for testing the quality of strings for musical instruments.

phonoscope

/ ˈfəʊnəˌskəʊp /

noun

1. a device that renders visible the vibrations of sound waves

Word History and Origins

Origin of phonoscope¹

First recorded in 1880–85; phono- + -scope