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Webster 1913 Edition

Noun.

[Gr.

ἀν

priv. +

ὀρθόσ

straight +

-scope

(Physics)

An optical toy for producing amusing figures or pictures by means of two revolving disks, on one of which distorted figures are painted.

anorthoscope ‎(plural anorthoscopes)

An optical device (often a toy) used to produce a form of anamorphosis or to view distorted figures