Act definition, anything done, being done, or to be done; deed; performance: a heroic act. Australian Capital Territory n. 1. | Meaning, pronunciation, translations and examples Act definition is - the doing of a thing : deed. Act definition: When you act , you do something for a particular purpose. act definition: 1. to behave in the stated way: 2. to do something for a particular purpose or to solve a problem…. abbr. See more. A trademark for a standardized college entrance examination. Learn more. Define act.

act synonyms, act pronunciation, act translation, English dictionary definition of act. How to use act in a sentence. Act One sets the scene - context, characters, motivation, goal.

The purpose of acts in drama = Aristotle advised that a play should have three acts.