/ kɑːmpləmənt /
ETYM Latin complementun: cf. French complément. Related to Complete, Compliment.
1. Either of two parts that mutually complete each other.
2. Something added to complete or make perfect.
3. A word or phrase used to complete a grammatical construction.
4. A complete number or quantity.
5. Number needed to make up whole force; SYN. full complement.
6. One of a series of enzymes in the blood serum that are part of the immune response.
7. Full number or amount; addition that makes up full number; one of two equal things that complete each other; Grammar, addition to complete a predicate.