[ a-fahyn, uh-fahyn, af-ahyn ]
/ æˈfaɪn, əˈfaɪn, ˈæf aɪn /


a person related to one by marriage.

adjective Mathematics.

assigning finite values to finite quantities.
of or relating to a transformation that maps parallel lines to parallel lines and finite points to finite points.

Origin of affine

1500–10; < French affin related < Latin affinis akin, neighboring

Related forms

af·fine·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for affine


/ (ˈæfaɪn) /


maths of, characterizing, or involving transformations which preserve collinearity, esp in classical geometry, those of translation, rotation and reflection in an axis

Word Origin for affine

C16: via French from Latin affīnis bordering on, related
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012