XO stands for hugs and kisses.
- An example of XO is what someone would put at the end of an email to a good friend, before signing their name.
- 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.
- Alternative form of xoxo. (an abbreviation for hugs and kisses, usually placed at the end of a letter.)
xo - Computer Definition
The abbreviation for crystal oscillator. See crystal oscillator.