Noun
1. an administrative unit of government;
"the Central Intelligence Agency""the Census Bureau""Office of Management and Budget""Tennessee Valley Authority"2. a business that serves other businesses
3. the state of being in action or exerting power;
"the agency of providence""she has free agency"4. the state of serving as an official and authorized delegate or agent
5. how a result is obtained or an end is achieved;
"a means of control""an example is the best agency of instruction""the true way to success"