In geometry, having the same anharmonic ratio or system of anharmonic ratios; capable of being brought into coincidence by a series of central projections upon planes; so related, as two figures, that to any point in one (without exception) only one point in the other corresponds, and vice versa, while to points situated in a line in either figure correspond collinear points in the other.In orthography, relating to homography; employing the same character at all times and in all circumstances to represent the same sound: as, a homographic alphabet.In philology, of or pertaining to homographs.