DICT.TW Dictionary Taiwan
3.145.7.253
Search for:
▼[Show options]
[Pronunciation] [Help] [Database Info] [Server Info]

1 definition found

From: Webster's Revised Unabridged Dictionary (1913)

 Op·tog·ra·phy n.  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.
 ◄ ►