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1. Something attached to another in a dependent or subordinate position. See Synonyms at attachment.
2. A person associated with another in a subordinate or auxiliary capacity.
3. Grammar A clause or phrase added to a sentence that, while not essential to the sentence's structure, amplifies its meaning, such as for several hours in We waited for several hours.
4. Logic A nonessential attribute of a thing.
1. Added or connected in a subordinate or auxiliary capacity: an adjunct clause.
2. Attached to a faculty or staff in a temporary or auxiliary capacity: an adjunct professor of history.

[From Latin adiūnctus, past participle of adiungere, to join to; see adjoin.]

ad·junc′tion (ə-jŭngk′shən) n.
ad·junc′tive adj.


(Grammar) (in phrase-structure grammar) the relationship between a branch of a tree representing a sentence to other branches to its left or right that descend from the same node immediately above
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.adjunction - an act of joining or adjoining thingsadjunction - an act of joining or adjoining things
joining, connexion, connection - the act of bringing two things into contact (especially for communication); "the joining of hands around the table"; "there was a connection via the internet"
References in periodicals archive ?
Moreover, this pair of adjoint functors induces an adjunction on the homotopy categories: [(x).
Mazzola and Andreatta insist that music and mathematics involve common structures that can be related by the notion of adjoint functors.
Kan, Adjoint functors, Transactions of the American Mathematical Society 87 (1958) pp.