English Explanatory Dictionary

opeidoscope

English dictionary entry

Meanings

noun
  1. 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.

Word forms

opeidoscope opeidoscopes

Etymology

Coined by its inventor Amos Dolbear, from Ancient Greek roots.

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