Definition of AVAILABILITY. 1. : the quality or state of being available. 2. : an available person or thing.
Definition of EXECUTIVE OFFICER. : the officer second in command of a military or naval organization or vessel. ADVERTISEMENT. the officer second in command of a military or naval organization or vessel. ADVERTISEMENT.
Executive (government) The executive is the organ exercising authority in and holding responsibility for the governance of a state. The executive executes and enforces law. In political systems based on the principle of separation of powers, authority is distributed among several branches (executive, legislative, judicial) â an attempt to prevent the concentration of power in the hands of a small group of people.