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(n.) a person who has administrative authority over an organization or division of an organization; a manager, supervisor or administrator at a high level within an organization; as, all executives of the company were given stock options.