opeidoscope (English, noun)
expansion: opeidoscope (plural opeidoscopes)
Senses:
glosses: An instrument, consisting of a tube with one end open and the other end covered with a thin flexible membrane with a mirror attached to its centre, used for exhibiting upon a screen, by means of rays reflected from the mirror, the vibratory motions caused by sounds that enter the tube.
Forms:
form: opeidoscopes
tags: plural