Meaning & use
Stereopticon
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An early projector, popular in the 19th and early 20th centuries, that used two lenses to blend or dissolve between images projected from glass slides.
See it in a sentence
The historical society displayed an antique stereopticon alongside its original glass slides.
Before motion pictures, lecturers used a stereopticon to illustrate their talks with vivid projected images.
A note on using this word
Combining Greek "stereos" ("solid, three-dimensional") with "optikon" ("relating to sight"), the device was a direct precursor to the modern slide projector.
Words with a similar meaning
magic lantern
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