Definitions
1.nounSomething done so as to accomplish a purpose.
2.nounA way of motion or functioning."Knead bread with a rocking action."
3.nounFast-paced activity."a movie full of exciting action"
4.nounA mechanism; a moving part or assembly."a rifle action"
5.nounThe mechanism, that is the set of moving mechanical parts, of a keyboard instrument, like a piano, which transfers the motion of the key to the sound-making device.
6.nounThe distance separating the strings and the fretboard on a guitar.
7.nounSexual intercourse."She gave him some action."
8.nounCombat."He saw some action in the Korean War."
9.nounA charge or other process in a law court (also called lawsuit and actio).
10.nounA mapping from a pairing of mathematical objects to one of them, respecting their individual structures. The pairing is typically a Cartesian product or a tensor product. The object that is not part of the output is said to act on the other object. In any given context, action is used as an abbreviation for a more fully named notion, like group action or left group action.
11.nounThe product of energy and time, especially the product of the Lagrangian and time.
12.nounThe event or connected series of events, either real or imaginary, forming the subject of a play, poem, or other composition; the unfolding of the drama of events.
13.noun(painting and sculpture) The attitude or position of the several parts of the body as expressive of the sentiment or passion depicted.
14.nounSpin put on the bowling ball.
15.nounA share in the capital stock of a joint-stock company, or in the public funds.
16.verbTo act on a request etc, in order to put it into effect.
17.verbTo initiate a legal action against someone.
18.interjectionDemanding or signifying the start of something, usually an act or scene of a theatric performance."The director yelled ‘Action!’ before the camera started rolling."