• 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"
• 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"
• 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"
• a suburban area laid out in streets and lots for a future residential area
• something added to what you already have; "the librarian shelved the new accessions"; "he was a new Addition to the staff"
• 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"

'Addition' in other languages