# codomain

> English word · Noun · IPA /ˌkoʊ.doʊˈmeɪn/

## Definitions
1. The target set into which a function is formally defined to map elements of its domain; the set denoted Y in the notation f : X → Y.
2. The target set into which a function is formally defined to map elements of its domain; the set denoted Y in the notation f : X → Y.

## Etymology
From co- + domain.

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