əjȯin also aˈ- verb
( -ed/-ing/-s )
Etymology: Middle English ajoinen, adjoinen, from Middle French ajoindre, from Latin adjungere, from ad- + jungere to join — more at yoke
transitive verb
1.
a. : to join or attach physically
it is forbidden to adjoin to a postcard any sample of merchandise — Bahamas Official Gazette
b. : to add, attach, or append especially as a supplement
he adjoins the remark that God was … reconciling the world to himself — P.L.Holmer
2. : to lie next to : be in contact with : abut upon
his land adjoins the sea — F.D.Smith & Barbara Wilcox
3. : to add to a domain of numbers (a number not originally belonging to it) thereby deriving a larger domain
x 2 - 2 can be factored by adjoining √2 to the domain of rational numbers
intransitive verb
: to be close, next to, or in contact with one another
the two lots adjoin