# Combination

[kom-buh-ney-shuh n] /ˌkɒm bəˈneɪ ʃən/

noun
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, combinations. a suit of underwear in one piece.
8.
Mathematics.

/ˌkɒmbɪˈneɪʃən/
noun
1.
the act of combining or state of being combined
2.
a union of separate parts, qualities, etc
3.
an alliance of people or parties; group having a common purpose
4.

5.
(Brit) a motorcycle with a sidecar attached
6.
(maths)

7.
the chemical reaction of two or more compounds, usually to form one other compound
8.
(chess) a tactical manoeuvre involving a sequence of moves and more than one piece
n.

late 14c., combinacyoun, from Old French combination (14c., Modern French combinaison), from Late Latin combinationem (nominative combinatio) “a joining two by two,” noun of action from past participle stem of combinare (see combine (v.)).

1. A set containing a certain number of objects selected from another set.
The number of combinations of r objects chosen from a set of n is
n C r = n! / ((n-r)! r!)
where “n C r” is normally with n and r as subscripts or as n above r in parentheses.
2. In the theory of combinators, a combination denotes an expression in which function application is the only operation.
(1995-04-10)

• Combination calculus

combination calculus com·bi·na·tion calculus (kŏm’bə-nā’shən) n. See alternating calculus.

• Combination-door

noun 1. an outside door having a frame into which different types of panels can be inserted, as a screen for summer or storm sash for winter.

• Combination-last

noun 1. a shoe last that has a narrower heel or instep than the standard last.

• Combination-lock

noun 1. a lock opened by rotating one or more specially marked dials a given number of times through a particular set of positions in a prescribed order and direction. noun 1. a type of lock that can only be opened when a set of dials releasing the tumblers of the lock are turned to […]

• Combination oven

noun a kitchen appliance that can do conventional heating or microwave cooking Usage Note cooking

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