XO

From Wikipedia, the free encyclopedia

XO may refer to:

In science and technology:

• Crystal oscillator
• XML object
• XO Telescope and its related exoplanet survey
• XO sex chromosomes:
  • Turner Syndrome
  • X0 sex-determination system, as found in insects

Products:

• The Children's Machine (XO or XO-1), to be produced by the One Laptop per Child association.
• XO sauce
• XO Wave, digital audio software

Organisations:

• XO Communications, a telecom company

Music:

• XO (album), an album by Elliott Smith
• XO (Artist), a reggae performer
• "XO", a song from From Under the Cork Tree, an album by Fall Out Boy

Other meanings:

• Spain's LTE International Airways, IATA code for LTE International Airways
• Executive officer (military)
• Executive order, an edict issued by a member of the executive branch of a government.
• Tic-tac-toe, a game using X's and O's
• Eastern Orthodoxy (Christianity), from the Greek: Xristianos Orthodoksos (Χριστιανός Ορθόδοξος)
• The sequence of letters denoting hugs and kisses used to express affection in writing (e.g., XOXO)
• Badtz-Maru, often represented "XO", a character from Sanrio's Hello Kitty series
• XO (Extra Old), an unofficial grade used in marketing Cognac and other brandies, where the youngest brandy is stored at least six years in cask.

X0 (X-zero):

• SpaceShipOne flight 15P
• X (Xbox show)
• Turner Syndrome or X0 sex-determination system (genetics)