Definify.com
Webster 1913 Edition
Phonoscope
Pho′no-scope
,Noun.
[
Phono-
+ -scope
.] (Physics)
(a)
An instrument for observing or exhibiting the motions or properties of sounding bodies; especially, an apparatus invented by König for testing the quality of musical strings.
(b)
An instrument for producing luminous figures by the vibrations of sounding bodies.