Definition of adjunction in English:

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Pronunciation: /əˈjəNG(k)SHən/


1 Mathematics The joining of two sets that without overlapping jointly constitute a larger set, or the relation between two such sets.
Example sentences
  • The problem of de Groot concerned compactifications of spaces by means of an adjunction of a set of minimal dimension.
  • The last piece of this puzzle is the notion of an adjunction.
  • Now we have the notion of an adjunction, along with its unit and counit.
2 Logic The asserting in a single formula of two previously asserted formulae.


Late 16th century: from Latin adjunctio(n-), from the verb adjungere (see adjoin).

For editors and proofreaders

Syllabification: ad·junc·tion

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