Simple Definition of adjoin
of a building, room, area of land, etc. : to be next to or joined with something
Full Definition of adjoin
1 : to add or attach by joining
2 : to lie next to or in contact with
: to be close to or in contact with one another
Examples of adjoin
Her office adjoins the library.
The two rooms adjoin each other.
Origin of adjoin
Middle English, from Anglo-French ajoindre, from Latin adjungere, from ad- + jungere to join — more at yoke
First Known Use: 14th century
ADJOIN Defined for Kids
Definition of adjoin
: to be next to or in contact with <The two rooms adjoin each other.>
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