(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.

plural of freight operating company

plural of train operating company

(UK, rail transport) A company that runs freight trains on the national railway network in Great Britain under license from the government.

(UK, rail transport) A company that operates passenger trains on the mainline railway network in Great Britain under franchise or license from the Government.

plural of operating room table

An operating table.

plural of chief operating officer

plural of net operating income

(investment, finance) The amount by which the income of a company is less than its expenditure.