# affine

> English word · Adjective · IPA /əˈfaɪn/ · frequency rank #57,203

## Definitions
1. Assigning finite values to finite quantities.
2. Of or pertaining to a function expressible as f(⃑x)=A⃑x+⃑b (where A is a linear transformation and ⃑b is a constant), which, regarded as a transformation, maps parallel lines to parallel lines and finite points to finite points.
3. Of two materials, having mutual affinity.

## Etymology
From Latin affinis (“connected with”).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/affine