adjoin — English Dictionary

adjoin
Pronunciations (3)
  • /əˈd͡ʒɔɪn/
    Pronunciation notes
    • Canada
    • General-American
    • Received-Pronunciation
  • /əˈd͡ʒoɪn/
    Pronunciation notes
    • Australia
    • New-Zealand
  • əˈdʒɔɪn

Verb

  1. To share a common boundary or border with; to be physically contiguous to (a piece of land or property).

    Usage
    • Transitive or intransitive
    Examples

    The living room and dining room adjoin each other.

    It's at this point that these three neighbourhoods adjoin.

    More examples (2)

    '[…] The land was so very desirable for me in every respect, so immediately adjoining my own property, that I felt it my duty to buy it. […]'

    We were in the living area, which adjoins the kitchen.

  2. 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.

    Usage
    • Transitive
    Examples
    More examples (1)

    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;.

    The field adjunction #92;mathbb#123;Q#125;(#92;pi) can be obtained from #92;mathbb#123;Q#125; by adjoining #92;pi to #92;mathbb#123;Q#125;.

Verb

  1. lie adjacent to another or share a boundary

    Broader terms
    Examples

    Canada adjoins the U.S.

    England marches with Scotland

  2. be in direct physical contact with; make contact

    Broader terms
    Examples

    The two buildings touch

    Their hands touched

    More examples (2)

    The wire must not contact the metal cover

    The surfaces contact at this point

  3. attach or add

    Broader terms
    Examples

    I adjoin a copy of your my lawyer's letter

Word forms
adjoinsadjoiningadjoinedadjoined

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