Noun

(uncountable) The act of negating something.

(countable) A denial or contradiction.

* (Thomas Hardy)

But it pleased her to play on my passion / And whet me to pleadings / That won from her mirthful negations / And scornings undue.

(logic, countable) A proposition which is the contradictory of another proposition and which can be obtained from that other proposition by the appropriately placed addition/insertion of the word "not". (Or, in symbolic logic, by prepending that proposition with the symbol for the logical operator "not".)

*

(logic) The logical operation which obtains such (negated) propositions.

* {{quote-web

, date = 2011-07-20 , author = Edwin Mares , title = Propositional Functions , site = The Stanford Encyclopedia of Philosophy , url = http://plato.stanford.edu/archives/fall2011/entries/propositional-function , accessdate = 2012-07-15 }}

Although some of the logicians working in term logic have very complicated treatments of negation, we can see the origin of the modern conception in the extensional tradition as well. In Boole and most of his followers, the negation of a term is understood as the set theoretic complement of the class represented by that term. For this reason, the negation of classical propositional logic is often called ‘Boolean negation’.

Noun

(en noun)

An appendage; something attached to something else in a subordinate capacity.

* Shakespeare

Learning is but an adjunct to our self.

A person associated with another, usually in a subordinate position; a colleague.

(Wotton)

(grammar) A dispensable phrase in a clause or sentence that amplifies its meaning, such as "for a while" in "I typed for a while".

(rhetoric) Symploce.

(dated, metaphysics) A quality or property of the body or mind, whether natural or acquired, such as colour in the body or judgement in the mind.

(music) A key or scale closely related to another as principal; a relative or attendant key.

(syntax, X-bar theory) A constituent which is both the daughter and the sister of an X-bar.

*

We can see from (34) that Determiners are sisters of N-bar and daughters of
N-double-bar; Adjuncts' are both sisters and daughters of N-bar; and Comple-
ments are sisters of N and daughters of N-bar. This means that '''Adjuncts''' re-
semble Complements in that both are daughters of N-bar; but they differ from
Complements in that '''Adjuncts''' are sisters of N-bar, whereas Complements are
sisters of N. Likewise, it means that '''Adjuncts''' resemble Determiners in that
both are sisters of N-bar, but they differ from Determiners in that ' Adjuncts
are daughters of N-bar, whereas Determiners are daughters of N-double-bar.