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1 definition found
 for Optography
From The Collaborative International Dictionary of English v.0.48 :

  Optography \Op*tog"ra*phy\, n. [Optic + -graphy.] (Physiol.)
     The production of an optogram on the retina by the
     photochemical action of light on the visual purple; the
     fixation of an image in the eye. The object so photographed
     shows white on a purple or red background. See Visual
     purple, under Visual.
     [1913 Webster]

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