Definition of "ACT"

Initialism of Australian Capital Territory, a federal territory of Australia.  examples

Initialism of American College Test.  examples

Initialism of Association of Consumers and Taxpayers, a political party of New Zealand

1. (New Zealand politics) ACT New Zealand, a liberal conservative political party in New Zealand  examples

(countable) An instance of a certain standardized college admissions test in the United States, originally called the American College Test.  examples

(uncountable) Acronym of acceptance and commitment therapy.  examples