HOMOGRAPHY
Etymology
Noun
homography (countable and uncountable, plural homographies)
The state or quality of being spelt homographically; the state or quality of existing as homographs.
(geometry) An isomorphism between projective spaces that maps straight lines to straight lines.
Synonyms: projectivity, projective transformation, projective collineation
Hypernym: collineation
Hyponyms: linear fractional transformation, Möbius transformation
Source: Wiktionary
Ho*mog"ra*phy, n.
1. That method of spelling in which every sound is represented by a
single character, which indicates that sound and no other.
2. (Geom.)
Definition: A relation between two figures, such that to any point of the
one corresponds one and but one point in the other, and vise versa.
Thus, a tangent line rolling on a circle cuts two fixed tangents of
the circle in two sets of points that are homographic.
Source: Webster’s Unabridged Dictionary 1913 Edition