Definition 2.5. A function is onto if each element of the codomain has at least one element of the domain assigned to it. In other words, a function is onto if the range equals the codomain.
Source: wiktionary
Codomain
//ˌkoʊ.doʊˈmeɪn//
Synonyms for "codomain" (2 found)
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Related word relations
OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.
Translations
11 translations across 9 languages.
Czech
1 entries- obor hodnot noun (target set of a function)
Danish
1 entries- dispositionsmængde noun (target set of a function)
German
1 entries- Zielmenge noun (target set of a function)
Icelandic
3 entries- aðmengi noun (target set of a function)
- bakmengi noun (target set of a function)
- ítak noun (target set of a function)
Japanese
1 entries- 終域 noun (target set of a function)
Polish
1 entries- przeciwdziedzina noun (target set of a function)
Portuguese
1 entries- contradomínio noun (target set of a function)
Russian
1 entries- область значений noun (target set of a function)
Swedish
1 entries- målmängd noun (target set of a function)
Sample sentences
3 total sentences available.
Once we have described f as a function from A to B, by convention we will call B the codomain, even though other sets, of which B is a subset, could have been used.[…]If y is an element of the codomain, then y#92;in#92;mathit#123;Img#125;(f,A) iff there is some x in the domain such that f maps x to y.
Source: wiktionary
For example, the codomain of g(X)#61;X³ consists of all real numbers. A function links each element in its domain to some element in its codomain. Each domain element is linked to exactly one codomain element.
Source: wiktionary
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.