X2

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X2 may refer to:

Contents 1 Mathematics 2 Films 3 Video games 4 Transportation craft 5 Other

[edit] Mathematics

• Square (algebra), also known as the "algebraic square", a concept in algebra
• Chi-square distribution, a theoretical probability distribution widely used in inferential statistics

[edit] Films

• X2, a 2003 American movie also known as X-Men United
• XXX: State of the Union, also known as X2 or XXX², a 2005 American film

[edit] Video games

• X2, a video game
• Final Fantasy X-2, an RPG video game
• Megaman X2, a platform game
• X²: The Threat, a space simulation game

[edit] Transportation craft

• Bell X-2, an experimental supersonic aircraft
• Sikorsky X2, a prototype, coaxial high-speed helicopter
• SpaceShipOne flight 17P, also known as "X2", the second Ansari X Prize flight
• Skycycle X-2, a rocket used by Evel Knievel
• HM Submarine X2, a Royal Navy submarine.
• Bathyscaphe Trieste II, also known as X-2, the US Navy bathyscaphe based on the Trieste
• X2 train, used for X2000 train system in Sweden
• X2 (PWC), a personal water craft

[edit] Other

• X2 (protocol), a pre-V.90 standard for 56k downstream modem communications
• Athlon 64 X2, the first dual-core desktop CPU manufactured by AMD
• X² (roller coaster), a Roller Coaster at Six Flags Magic Mountain
• The counterintelligence branch of the Office of Strategic Services, an American agency during World War II
• X-2 is the name of the fictional space shuttle series in the Epcot attration, Mission: Space
• A two-lane PCI Express slot
• A type of 10 Gigabit Ethernet optical transciever
• X-2 is the name of the Hydrofoil owned by the Venture family on the Venture Bros.