Adjoin

//əˈd͡ʒɔɪn// verb

verb ·Moderate ·College level

Definitions

Verb
  1. 1
    To be in contact or connection with. transitive

    "The living room and dining room adjoin each other."

  2. 2
    attach or add wordnet
  3. 3
    To extend an algebraic object (e.g. a field, a ring, etc.) by adding to it an element not belonging to it and then ensuring closure, for example by also adding all finite power series of the element. transitive

    "The ring adjunction #92;mathbb#123;Q#125;#91;#92;sqrt#123;2#125;#93; can be obtained from #92;mathbb#123;Q#125; by adjoining #92;sqrt#123;2#125; to #92;mathbb#123;Q#125;."

  4. 4
    be in direct physical contact with; make contact wordnet
  5. 5
    lie adjacent to another or share a boundary wordnet

Synonyms

All synonyms
bordertouchabutabutabut onadd

Example

More examples

"The two villages adjoin each other."

Etymology

From Anglo-Norman adjoindre, from Latin adiungō.

More for "adjoin"

SynonymsSentencesPronunciationTranslate

Next best steps

Find stronger synonymsSee usage examplesCheck pronunciationBrowse writing guides

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.