# binary relation

> English word · Noun · IPA /ˈbaɪ.ner.i rɪˈleɪ.ʃən/

## Definitions
1. A subset of the Cartesian product A×A (the set of ordered pairs (a, b) of elements of A, alternatively written as A²).
2. A subset of the Cartesian product A×B.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/word/binary-relation