# bijection

> English word · Noun · IPA /baɪˈd͡ʒɛk.ʃən/

## Definitions
1. A one-to-one correspondence, a function which is both a surjection and an injection.

## Etymology
PIE word
 *dwóh₁
From French bijection, introduced by Nicolas Bourbaki in their treatise Éléments de mathématique.

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