adjective
Definition: Related to a type of mathematical transformation that changes the position of points in a way that keeps straight lines straight and parallel lines parallel, but may change distances and angles.
Example: In geometry, an affine transformation can change the position of a shape without altering its proportions.
noun
Definition: A person who is related to someone through marriage rather than by blood.
Example: She is an affine of the family, having married into it last year.