combination -- (a collection of things that have been combined; an assemblage of separate parts or qualities)
combination -- (a coordinated sequence of chess moves)
combination -- (a sequence of numbers or letters that opens a combination lock; "he forgot the combination to the safe")
combination -- (a group of people (often temporary) having a common purpose; "they were a winning combination")
combination -- (an alliance of people or corporations or countries for a special purpose (formerly to achieve some antisocial end but now for general political or economic purposes))
combination -- (the act of arranging elements into specified groups without regard to order)
combination, combining, compounding -- (the act of combining things to form a new whole)