*noun* the process of adding things together

*noun* a substance added to something to alter its effects or characteristics

*noun* things added or attached to something else

*adverb* in a way that adds up or contributes positively

*adjective* relating to or denoting something that is added

*noun* a variation of the term addition, often used in legal or formal contexts

*noun* the quality of being additive or capable of addition to something

*adverb* pertaining to the process of addition