XP may refer to:

Medicine

Xanthelasma palpebrarum Xanthelasma is a sharply demarcated yellowish deposit of cholesterol underneath the skin. It usually occurs on or around the eyelids (''xanthelasma palpebrarum'', abbreviated XP). While they are neither harmful to the skin nor Pain, painful, these ...

, a cholesterol deposit in the eyelid *

Xeroderma pigmentosum Xeroderma pigmentosum (XP) is a genetic disorder in which there is a decreased ability to repair DNA damage such as that caused by ultraviolet (UV) light. Symptoms may include a severe sunburn after only a few minutes in the sun, freckling in sun- ...

, a genetic disorder

Computing

Windows XP Windows XP is a major release of Microsoft's Windows NT operating system. It was released to manufacturing on August 24, 2001, and later to retail on October 25, 2001. It is a direct upgrade to its predecessors, Windows 2000 for high-end and ...

, an operating system *

Microsoft Office XP Microsoft Office XP (codenamed Office 10) is an office suite which was officially revealed in July 2000 by Microsoft for the Windows operating system. Office XP was released to manufacturing on March 5, 2001, and was later made available to ret ...

, a version of the software suite *

Athlon XP Athlon is the brand name applied to a series of x86-compatible microprocessors designed and manufactured by Advanced Micro Devices (AMD). The original Athlon (now called Athlon Classic) was the first seventh-generation x86 processor and the fi ...

, a series of

AMD Advanced Micro Devices, Inc. (AMD) is an American multinational semiconductor company based in Santa Clara, California, that develops computer processors and related technologies for business and consumer markets. While it initially manufactur ...

microprocessor A microprocessor is a computer processor where the data processing logic and control is included on a single integrated circuit, or a small number of integrated circuits. The microprocessor contains the arithmetic, logic, and control circu ...

s *

Extreme programming Extreme programming (XP) is a software development methodology intended to improve software quality and responsiveness to changing customer requirements. As a type of agile software development,"Human Centred Technology Workshop 2006 ", 2006, PD ...

, a software development methodology * XP, a complexity class in

parameterized complexity In computer science, parameterized complexity is a branch of computational complexity theory that focuses on classifying computational problems according to their inherent difficulty with respect to ''multiple'' parameters of the input or output. T ...

Technology

Ilford XP XP is a chromogenic black-and-white film from Ilford Photo. It was launched to great acclaim at photokina in September 1980, and went on sale in January, 1981. It has since progressed through a number of versions, with XP2 Super being the latest. ...

, a chromogenic black and white film made by Ilford Photo

Gaming

Experience point An experience point (often abbreviated as exp or XP) is a unit of measurement used in some tabletop role-playing games (RPGs) and role-playing video games to quantify a player character's life experience and progression through the game. Experi ...

, a unit for measuring a character's progress in role-playing games

Transport

Boeing XP-7 The Boeing XP-7 was a prototype United States biplane fighter of the 1920s. Development and design The XP-7 started life as the last Boeing Model 15 (PW-9D), serial 28-41. It was then adapted to mount the 600 hp Curtiss V-1570 Conqueror ...

, a prototype United States biplane fighter of the 1920s * Experimental pursuit, a USAAC aircraft designation, used by e.g. the

Lockheed XP-38 Lightning The Lockheed P-38 Lightning is an American single-seat, twin piston-engined fighter aircraft that was used during World War II. Developed for the United States Army Air Corps by the Lockheed Corporation, the P-38 incorporated a distinctive twi ...

Avelo Airlines Avelo Airlines () is an ultra low-cost U.S. carrier headquartered in Houston, Texas. It previously operated charter flights as ''Casino Express Airlines'' and ''Xtra Airways'', before transitioning to scheduled operations and rebranding as Av ...

(IATA code)

Other uses

Chi Rho The Chi Rho (☧, English pronunciation ; also known as ''chrismon'') is one of the earliest forms of Christogram, formed by superimposing the first two (capital) letters— chi and rho (ΧΡ)—of the Greek word ( Christos) in such a way t ...

, a Christian symbol *

, a unit of measurement in role-playing games * XP, an

emoticon An emoticon (, , rarely , ), short for "emotion icon", also known simply as an emote, is a pictorial representation of a facial expression using Character (symbol), characters—usually punctuation marks, numbers, and letters—to express a ...

* X phrase in linguistic theory {{disambiguation