A person or group having administrative or managerial authority in an organization. The chief officer of a government, state, or political division. The branch of government charged with putting into effect a country's laws and the administering of its functions. Computer Science A set of coded instructions designed to process and control other coded instructions. Of, relating to, capable of, or suited for carrying out or executing: an advisory body lacking executive powers. Having, characterized by, or relating to administrative or managerial authority: the executive director of a drama troupe; executive experience and skills. Of or relating to the branch of government charged with the execution and administration of the nation's laws.