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phonomotor
phonomotor n. 
/ˌfɒnə(ʊ)ˈməʊtə/, /ˌfoʊnoʊˈmoʊdər/ now historical a device in which sound waves cause a diaphragm to vibrate, which in turn drives a wheel.
Brit. /ˌfəʊnə(ʊ)ˈməʊtə/
, /ˌfəʊnə(ʊ)ˈməʊtə//ˌfɒnə(ʊ)ˈməʊtə/U.S. /ˌfoʊnəˈmoʊdər/
, /ˌfoʊnəˈmoʊdər//ˌfoʊnoʊˈmoʊdər/ΚΠ
1878 Sci. Amer. 27 July 51/1 Mr. Edison..began experiments on a phonomotor, or instrument for measuring the mechanical force of sound waves produced by the human voice.
1998 Lit. & Psychol. 44 The automatic telegraph, telephone, cinematography,..phonomotor, torpedo,..—these are just some of the problems that occupied Edison's mind from the 1870s.
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as lemmas
- to keep one's bill under wing
- to keep one's block
- to keep one's breath to cool one'one's own porridge
- to keep one's breath to cool one's porridge
- to keep one's breath to cool one's pottage
- to keep one's chapels
- to keep one's choir
- to keep one's cool
- to keep one's counsel
- to keep one's countenance
- to keep one's cut
- to keep one's day
- to keep one's distance
- to keep one's ear to the ground
- to keep one's ears to the ground
- to keep one's end hold up one's end
- to keep one's end to keep
- to keep one's end up
- to keep one's eye after
- to keep one's eye on
- to keep one's eye on the ball
- to keep one's eye on the prize
- to keep one's eye to the prize
- to keep one's eye upon
- to keep one's eyeball on