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.
Noun. 1. chief operating officer-the corporate executive responsible for the operations of the firm; reports to a board of directors; may appoint other managers (including a president). CEO, chief executive officer. business executive, corporate executive-an executive in a business corporation.hief operating officer-the corporate executive responsible for the operations of the firm; reports to a board of directors; may appoint other managers (including a president). CEO, chief executive officer. business executive, corporate executive-an executive in a business corporation.