chief operating officer

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun business A corporate officer of a corporation, company, or agency, responsible for executing decisions of the chief executive officer (CEO) according to their decided schedule; often initialised as COO.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the corporate executive responsible for the operations of the firm; reports to a board of directors; may appoint other managers (including a president)