Something that is an adjunct to something larger or more important is connected with it or helps to perform the same task. Physical therapy is an important adjunct to drug treatments = appendage
In grammar, an adjunct is a word or group of words which indicates the circumstances of an action, event, or situation. An adjunct is usually a prepositional phrase or an adverb group
a construction that is part of a sentence but not essential to its meaning and can be omitted without making the sentence ungrammatical something added to another thing but not an essential part of it a person who is an assistant or subordinate to another of or relating to a person who is subordinate to another
" A quality or property of the body or the mind, whether natural or acquired; as, color, in the body, judgment in the mind
A word or words added to quality or amplify the force of other words; as, the History of the American Revolution, where the words in italics are the adjunct or adjuncts of "History