Scioptic

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CIDE DICTIONARY

Scioptic, a. [Gr. shadow + belonging to sight: cf. F. scioptique. See Optic.].

Of or pertaining to an optical arrangement for forming images in a darkened room, usually called scioptic ball. [1913 Webster]

Scioptic ball (Opt.), the lens of a camera obscura mounted in a wooden ball which fits a socket in a window shutter so as to be readily turned, like the eye, to different parts of the landscape.