Optography

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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]