■ noun
1》 the action of combining different things.
2》 a union in which the component elements are individually distinct.
3》 Mathematics a group of things chosen from a larger number without regard to their arrangement.
4》 a sequence of numbers or letters used to open a ~ lock.
5》 ( ~s ) dated a single undergarment covering the body and legs.
Derivatives
~al adjective
combinative adjective
combinatory adjective