an optical instrument for producing an image in which the depth or relief of an object is reversed.

Compare stereoscope.

Origin of pseudoscope

First recorded in 1850–55; pseudo- + -scope Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for pseudoscope

Historical Examples of pseudoscope

  • Of course in this practical age the inquiry is put—Of what use is the stereoscope or pseudoscope?

  • The pseudoscope which produces effects opposite to those of the stereoscope is an interesting device.

    Visual Illusions

    Matthew Luckiesh