(arithmetic) the mathematical operation of increasing one amount by another. The result of adding two quantities is their sum.
something added to what you have already; "the librarian shelved the new accessions"; "he was a new addition to the staff"
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"
a suburban area laid out in streets and lots for a future residential area
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 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"
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"
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"
the act of adding one thing to another
the arithmetic operation of summing; calculating the sum of two or more numbers
a component that is added to something to improve it