Definition of addition
1 : a part added (as to a building or residential section)
The addition expanded the kitchen.
2 : anything or anyone added : increase The clerk was a recent addition to the staff.
3 : the act or process of adding a recipe enhanced by the addition of freshly ground pepper especially : the operation of combining numbers so as to obtain an equivalent simple quantity schoolchildren learning about addition and subtraction
4 : direct chemical combination of substances into a single product
in addition in addition to
: besides entry 2, also The job requires a college degree and, in addition, at least two years of experience.
: combined or associated with : besides entry 1 sense 2 In addition to soup, several salads were served.
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Time Traveler for addition
The first known use of addition was in the 14th century
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