combination: Meaning and Definition of

com•bi•na•tion

1. the act of combining or the state of being combined.
2. a number of things combined: a combination of ideas.
3. something formed by combining: A chord is a combination of notes.
4. an alliance of persons or parties: a combination in restraint of trade.
5. the set or series of numbers or letters used in setting the mechanism of a combination lock.
6. the parts of the mechanism operated by this.
7. Often,a suit of underwear in one piece.
1. the arrangement of elements into various groups without regard to their order in the group.
2. a group thus formed. Cf. permutation (def. 1).