optography

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.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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Optography is always a great word to know.
So is ninnyhammer. Does it mean:
a fool or simpleton; ninny.
a stew of meat, vegetables, potatoes, etc.
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