A substance added to another substance or product to produce specific properties in the combined substance. / (grammar) A word or phrase that adds something, such as also, even, or nor.

plural of addition

as well as; besides

(mathematics, nonstandard) additivity

(music) The practice of enlarging and revising the orchestration of an earlier work, usually a Baroque piece, to accommodate the larger contemporary orchestras and tastes of the time.

plural of additional accompaniment

(sports) stoppage time

(mathematics) A unary function that preserves the addition operation; a unary function f such that for any x and y: f(x + y) = f(x) + f(y).

(mathematics) The inverse with respect to addition; the opposite.

plural of food additive