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Webster 1913 Edition

Adjoin

Ad-join′

Verb.

[

imp. & p. p.

Adjoined

;

p. pr. & vb. n.

Adjoining

[OE.

ajoinen

, OF.

ajoindre

, F.

adjoindre

, fr. L.

adjungere

;

jungere

to join. See

Join

, and cf.

Adjunct

To join or unite to; to lie contiguous to; to be in contact with; to attach; to append.

Corrections . . . should be, as remarks,

adjoined

by way of note.

Watts.

Ad-join′

(ăd-join′)

Verb.

To lie or be next, or in contact; to be contiguous;

as, the houses

adjoin

When one man’s land

adjoins

to another's.

Blackstone.

☞ The construction with to, on, or with is obsolete or obsolescent.

To join one's self.

[Obs.]

She lightly unto him

adjoined

side to side.

Spenser.

Webster 1828 Edition

Adjoin

ADJOIN'

Verb.

[L. adjungo, ad and jungo. See Join.]

To join or unite to; to put to, by placing in contact; to unite, by fastening together with a joint, mortise, or knot. But in these transitive senses, it is rarely used. [See Join.]

ADJOIN'

Verb.

To lie or be next to, or in contact; to be contiguous; as, a farm adjoining to the highway. This is the common use of the word, and to is often omitted; as adjoining the highway.

Definition 2024

adjoin

English

Verb

adjoin ‎(third-person singular simple present adjoins, present participle adjoining, simple past and past participle adjoined)

(transitive) To be in contact or connection with.
The living room and dining room adjoin each other.
- 2013, Graeme Simsion, The Rosie Project, ISBN 9781405915335, page 55:
  
  We were in the living area, which adjoins the kitchen.
(transitive, mathematics, chiefly algebra and number theory) To extend an algebraic object (e.g. a field, a ring, etc.) by adding to it (an element not belonging to it) and all finite power series of (the element).
${\textbf {Q}}\left({\sqrt {2}}\right)$ can be obtained from ${\textbf {Q}}$ by adjoining ${\sqrt {2}}$ to ${\textbf {Q}}$ .