XO

XO is defined as hugs and kisses, or is the abbreviation for a military executive officer.

(abbreviation)

  1. An example of XO is what someone would put at the end of an email to a good friend, before signing their name.
  2. An example of XO is the individual on a Navy ship who is the primary assistant to the commanding officer and who is typically responsible for the administrative actions of the ship.

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See XO in Webster's New World College Dictionary

Mil. executive officer

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