ad ‧ junct /ˈædʒʌŋkt/ BrE AmE noun [countable]
[ Date: 1500-1600 ; Language: Latin ; Origin: past participle of adjungere ; ⇨ ↑ adjoin ]
1 . something that is added or joined to something that is bigger or more important
adjunct to
Online instruction is a useful adjunct to the real thing.
2 . technical an ↑ adverbial word or phrase that adds information to another part of a sentence. In ‘They arrived on Sunday’, ‘on Sunday’ is an adjunct.