Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. 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.

from the GNU version of the Collaborative International Dictionary of English

  • n. 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.

from The Century Dictionary and Cyclopedia

  • n. The fixation of an image on the retina. See optogram.

Etymologies

opto- + -graphy (Wiktionary)

Examples

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