stereoptican

stereopticon

[ster-ee-op-ti-kuhn, -kon, steer-]
noun Optics.
a projector usually consisting of two complete lanterns arranged so that one picture appears to dissolve while the next is forming.

Origin:
1860–65, Americanism; stere(o)- + Greek optikón (neuter) optic

stereoptican, adjective
stereoptician [ster-ee-op-tish-uhn, steer-] , noun
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World English Dictionary
stereopticon (ˌstɛrɪˈɒptɪkən, ˌstɪər-)
 
n
a type of projector with two complete units arranged so that one picture dissolves as the next is forming
 
[C19: from stereo- + Greek optikon, neuter form of optikosoptic]

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Word Origin & History

stereoptican
"double magic lantern producing dissolving views," from stere-, form of stereo- before a vowel (from Gk. stereos "solid;" see stereotype) + Gk. optikon, neut. of optikos "pertaining to sight."
Online Etymology Dictionary, © 2010 Douglas Harper
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