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

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