X2

From Wikipedia, the free encyclopedia

X2 may refer to:

• X2 (film), a 2003 American movie also known as X-Men United
• X2 (protocol), a pre-V.90 standard for 56k downstream modem communications
• X2 Turntable, a turntable manufactured by Numark
• X2 train, used for X2000 train system in Sweden
• Athlon 64 X2, the first dual-core desktop CPU manufactured by AMD
• Bell X-2, an experimental supersonic aircraft
• X2, a video game
• Final Fantasy X-2, another video game
• Megaman X2, another video game
• Skycycle X-2, the rocket used by Evel Knievel in his attempt to cross the Snake River Canyon in 1974
• HM Submarine X2, a Royal Navy submarine.
• Bathyscaphe Trieste II, also known as X-2, the US Navy bathyscaphe based on the Trieste
• SpaceShipOne flight 17P, also known as "X2", the second Ansari X Prize flight
• XXX: State of the Union, also known as X2 or XXX², a 2005 American film
• X2 (PWC), a hybrid stand-up/sit down Personal Watercraft, first manufactured by Kawasaki Heavy Industries in 1986, ended in 1995, and started again in 2006.

Additionally, X² may refer to:

• X²: The Threat, a video game
• Square (algebra), also known as the "algebraic square", a concept in algebra
• Chi-square distribution, a theoretical probability distribution widely used in inferential statistics