addition

1. (noun) the act of adding one thing to another; "the addition of flowers created a pleasing effect"; "the addition of a leap day every four years"
Related Words: fluoridation, fluoridization, increase, step-up
Antonyms: subtraction

2. (noun) a component that is added to something to improve it; "the addition of a bathroom was a major improvement"; "the addition of cinammon improved the flavor"
Synonyms: improver
Related Words: additive, afterthought, annex, annexe, attachment, component, constituent, element, elongation, extension, softener, wing

3. (noun) a suburban area laid out in streets and lots for a future residential area
Related Words: suburb, suburban area, suburbia

4. (noun) a quantity that is added; "there was an addition to property taxes this year"; "they recorded the cattle's gain in weight over a period of weeks"
Synonyms: gain, increase
Related Words: indefinite quantity

5. (noun) something added to what you have already; "the librarian shelved the new accessions"; "he was a new addition to the staff"
Synonyms: accession
Related Words: acquisition

6. (noun) the arithmetic operation of summing; calculating the sum of two or more numbers; "the summation of four and three gives seven"; "four plus three equals seven"
Synonyms: plus, summation
Related Words: arithmetic operation



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