n. something added to complete or embellish or make perfect; "a fine wine is a perfect complement to the dinner"; "wild rice was served as an accompaniment to the main dish"

n. either of two parts that mutually complete each other

n. one of a series of enzymes in the blood serum that are part of the immune response

n. number needed to make up a whole force; "a full complement of workers"

n. a complete number or quantity; "a full complement"

n. number obtained after a subtraction; value that is used in set theory and digital circuits