• Webster's Revised Unabridged Dictionary
    • n Stereomonoscope An instrument with two lenses, by which an image of a single picture projected upon a screen of ground glass is made to present an appearance of relief, and may be viewed by several persons at once.
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Century Dictionary and Cyclopedia
    • n stereomonoscope An instrument with two lenses for exhibiting on a screen of ground glass a single picture so as to give it all the effect of solidity.
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Webster's Revised Unabridged Dictionary
Stereo-, + mono-, + -scope,