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
n. [ F. topographie, Gr. &unr_;; &unr_; a place + &unr_; to write. ] The description of a particular place, town, manor, parish, or tract of land; especially, the exact and scientific delineation and description in minute detail of any place or region. [ 1913 Webster ]
☞ Topography, as the description of particular places, is distinguished from chorography, the description of a region or a district, and for geography, the description of the earth or of countries. Brande & C. [ 1913 Webster ]