executive officer
noun
the officer second in command of a military or naval organization.
an officer charged with executive duties, as in a corporation.
Origin of executive officer
First recorded in 1780–90
Words nearby executive officer
British Dictionary definitions for executive officer
executive officer
noun
the second-in-command of any of certain military units
Abbreviation: (US) XO
a specialist seaman officer, responsible under the captain for the routine efficient running of the ship in the US, British (formerly), and certain other navies