Bible Dictionaries
Optography
Webster's Dictionary
(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.
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Bibliography Information
Webster, Noah. Entry for 'Optography'. Noah Webster's American Dictionary. https://www.studylight.org/dictionaries/eng/web/o/optography.html. 1828.