OPEIDOSCOPES

Noun

opeidoscopes

plural of opeidoscope

Source: Wiktionary


OPEIDOSCOPE

O*pei"do*scope, n. Etym: [Gr. -scope.] (Physics)

Definition: An instrument, consisting of a tube having one end open and the other end covered with a thin flexible membrance to the center of which is attached a small mirror. It is used for exhibiting upon a screen, by means of rays reflected from the mirror, the vibratory motions caused by sounds produced at the open end of the tube, as by speaking or singing into it. A. E. Dolbear.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

16 June 2025

WINEBERRY

(noun) raspberry of China and Japan having pale pink flowers grown for ornament and for the small red acid fruits


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