X
X is the twenty-fourth letter in the basic modern Latin alphabet.-Uses:In mathematics, x is commonly used as the name for an independent variable or unknown value. The usage of x to represent an independent or unknown variable can be traced back to the Arabic word šay شيء = “thing,” used in Arabic algebra texts such as the Al-Jabr

X (Anna Vissi album)
X is the name of a Greek album by singer Anna Vissi released 2002 in Greece and Cyprus by Sony Music Greece. The album reached 2x platinum in Greece and 2x platinum in Cyprus

X (comics)
X, in comics, may refer to:*X , a character and series by Dark Horse Comics*X , a Japanese manga, also known as X/1999*X , a mutant character owned by Marvel Comics

X (Dark Horse Comics)
X is a comic book Character who starred in his own self-titled series published by Dark Horse Comics for their Comics Greatest World imprint

X (game series)
X is a science fiction space trading and combat simulator series created by German Developer Egosoft. The series is set in the X Universe where several races populate a number of worlds connected by jumpgates

X (John Cage book)
X: Writings ’79–’82 is a book by American avant-garde composer John Cage , first published in 1983. The book contains the following works:* "Foreword" * "Writing for the Fourth Time through Finnegans Wake"

X (K-Ci and JoJo album)
X is the third studio album by American R&B duo and brothers K-Ci & JoJo, released December 5, 2000 on MCA. Recording sessions took place during 1999–2000. Production was handled by various producers, including Mike Smoov, Rory Bennett, and DeVante Swing. The album peaked at number twenty on the US Billboard 200

X (Kristeen Young album)
X is the fourth album by Kristeen Young. It is themed around various reversals of, and thoughts on, the Ten Commandments.The album was produced by Tony Visconti and engineered by Mario McNulty at Studio B, Looking Glass Studios

X (Kylie Minogue album)
X is the tenth studio album by Australian recording artist Kylie Minogue. It is her first release since the greatest hits compilation Ultimate Kylie , and her first studio album since Body Language . X was preceded by lead single "2 Hearts" and released worldwide in November 2007

X (writing speed)
Original CD-ROM drives could read data at 150 kibibytes per second. As faster drives were released, the write speeds and read speeds for optical discs came to be indicated by manufacturers in terms of a multiple of the speed of the drives originally released to market. Using the notation nX, n is the multiple of the original speed that can be achieved

X (Xzibit song)
"X" is the second single from Xzibit's third studio album, Restless. Fellow West Coast rapper Snoop Dogg can be heard talking in the outro. It was produced by Dr. Dre with co-production from Scott Storch and Mel-Man. Dr

X chromosome
The X chromosome is one of the two sex-determining chromosomes in many animal species, including mammals and is common in both males and females. It is a part of the XY sex-determination system and X0 sex-determination system

X Factor (Czech Republic)
The X Factor is a television music talent show franchise originating in the United Kingdom, where it was devised as a replacement for the massively successful Pop Idol .-Series summary: "Under 25 boys" or "Under 25s" category

X Factor (Denmark)
X Factor is the Danish version of The X Factor, a show originating in the United Kingdom and is created by talent show judge and record and TV producer Simon Cowell.-Series summary: "Under 25 boys" or "Under 25s" category "Under 25 girls" category

X Factor (Italy)
X Factor is a successful TV show airing on prime time in Italy. The singing competition is the Italian version of The X Factor franchise

X marks the spot
X marks the spot may refer to:* X Marks the Spot , a 1931 film directed by Erle C. Kenton* X Marks the Spot , a 1942 film directed by George Sherman

X-ray
X-radiation is a form of electromagnetic radiation. X-rays have a wavelength in the range of 0.01 to 10 nanometers, corresponding to frequencies in the range 30 petahertz to 30 exahertz and energies in the range 120 eV to 120 keV. They are shorter in wavelength than UV rays and longer than gamma rays

X-Ray (ballet)
X–Ray is a ballet made by New York City Ballet balletmaster in chief Peter Martins to John Adams' 1994 Violin Concerto, commissioned jointly by the Minnesota Orchestra and City Ballet

X-Ray (book)
X-Ray was Ray Davies' first major attempt to write prose outside of his musical career as founding member of the British rock band the Kinks

X-ray tube
An X-ray tube is a vacuum tube that produces X-rays. They are used in X-ray machines. X-rays are part of the electromagnetic spectrum, an ionizing radiation with wavelengths shorter than ultraviolet light

X-Ray Vision (album)
X-Ray Vision is a 7", 33⅓ rpm EP released by The Moldy Peaches. There are three copyright dates listed on the album: 1994, 1995, and 1996. An insert inside the album states that Adam Green was the sole member of The Moldy Peaches at the time of the recording

Xanadu (musical)
Xanadu is a musical comedy with a book by Douglas Carter Beane, music and lyrics by Jeff Lynne and John Farrar, based on the 1980 cult classic film of the same name which was, in turn, inspired by the 1947 Rita Hayworth film Down to Earth. The title is a reference to the poem, Kubla Khan, or A Vision in a Dream. A Fragment, by Samuel Taylor Coleridge

Xanthate
Xanthate usually refers to a salt with the formula ROCS2-M+ . The name xanthates is derived from Greek ξανθός , meaning “yellowish, golden”, and indeed most xanthate salts are yellow

Xanthine
Xanthine , is a purine base found in most human body tissues and fluids and in other organisms. A number of stimulants are derived from xanthine, including caffeine and theobromine.

Xanthophyll
Xanthophylls are yellow pigments that form one of two major divisions of the carotenoid group. The name is from Greek xanthos + phyllon , due to their formation of the yellow band seen in early chromatography of leaf pigments

Xanthosis
Xanthosis is a type of skin-related disease where one has an abnormal yellow discolouration of the skin, resulting from the accumulation of cholesterol within the skin cells. It can also have such affect that there may be a yellowish discoloration of degenerating tissues, especially seen in malignant neoplasms. It was the championship word used in the 1995 Scripps National Spelling Bee.

Xavier
Most uses of Xavier are directly or indirectly derived from St. Francis Xavier and are therefore likely to have a Catholic connotation. It may refer to:* The given name Xavier* The surname Xavier* Xavier , the ring name of pro wrestler John Jirus

Xavier (name)
Xavier is a masculine name, one of the possible spellings of Javier.-Surname:*Abel Xavier, Portuguese footballer*Anderson Conceição Xavier , Brazilian footballer*Arlene Xavier, Brazilian volleyball player

XC
XC may refer to:* Christogram* 90 in Roman numerals* Cross-country running* Cross-country skiing* Cross-country cycling* Cross-country equestrianism* Cross-country paragliding* XC, a model of the Ford Falcon

Xe
Xe or XE may refer to:* Xenon, a chemical element* XE.com, a currency and foreign exchange rate website* Chi Epsilon , a national civil engineering honor society* ExpressJet Airlines IATA code

Xena (disambiguation)
Xena is the main character of Xena: Warrior Princess.Xena may also be used for:*Xena , a free open source solution for long-time digital archiving*Xēna or Lisa Fischer, R&B musician*Xena, the provisional name for Eris

Xenarthra
The superorder Xenarthra is a group of placental mammals , existent today only in the Americas and represented by anteaters, tree sloths, and armadillos. The origins of the order can be traced back as far as the Paleogene in South America

Xenogenesis
Lilith's Brood is a collection of three works by Octavia Butler. The three volumes of this science fiction series were previously collected in the now out of print volume, Xenogenesis

Xenolith
A xenolith is a rock fragment which becomes enveloped in a larger rock during the latter's development and hardening. In geology, the term xenolith is almost exclusively used to describe inclusions in igneous rock during magma emplacement and eruption

Xenomorph (band)
Xenomorph is a Dutch death metal band formed in 1994 in Leiden, the Netherlands. The band are apparently named after xenomorphs, fictional creatures made by the Swiss artist H.R. Giger and used by the English filmmaker Sir Ridley Scott in Alien.

Xenon
Xenon is a chemical element with the symbol Xe and atomic number 54. The element name is pronounced or . A colorless, heavy, odorless noble gas, xenon occurs in the Earth's atmosphere in trace amounts

Xenon (cipher)
In cryptography, Xenon is a block cipher designed in the year 2000 by Chang-Hyi Lee for the Korean firm SoftForum.The algorithm uses a key size of 128, 192, or 256 bits. It operates on blocks of 128 bits using a 16-round Feistel network structure with key whitening. Designed for speed, Xenon's round function doesn't use any S-boxes

Xenon (program)
Xenon is software to perform covert Internet searches, presently in use by taxing authorities to investigate the possibilities of tax evasion by various revenue producing web sites and clients selling goods on on-line auction sites

Xenopeltidae
The Xenopeltidae are a monotypic family of snakes created to the genus Xenopeltis, which is found in Southeast Asia. Its members are known for their highly iridescent scales. Currently, two species are recognized and no subspecies.-Description:

Xenophanes
of Colophon was a Greek philosopher, theologian, poet, and social and religious critic. Xenophanes life was one of travel, having left Ionia at the age of 25 he continued to travel throughout the Greek world for another 67 years. Some scholars say he lived in exile in Siciliy

Xenophobia
Xenophobia is defined as "an unreasonable fear of foreigners or strangers or of that which is foreign or strange". It comes from the Greek words ξένος , meaning "stranger," "foreigner" and φόβος , meaning "fear."

Xenophon
Xenophon , son of Gryllus, of the deme Erchia of Athens, also known as Xenophon of Athens, was a Greek historian, soldier, mercenary, philosopher and a contemporary and admirer of Socrates

Xenophon (disambiguation)
Xenophon was a soldier, mercenary and a contemporary and admirer of Socrates. Xenophon may also refer to:-Xenophon :*Xenophon of Corinth Olympic runner in 464 BC*Xenophon Athenian general in the Peloponessian War

Xenophora
Xenophora, common name carrier shells, is a genus of medium sized to large sea snails, marine gastropod mollusks in the family Xenophoridae, the carrier snails or carrier shells.-Description:

Xenopus
Xenopus is a genus of highly aquatic frogs native to Sub-Saharan Africa. There are 19 species in the Xenopus genus

Xenotransplantation
Xenotransplantation , is the transplantation of living cells, tissues or organs from one species to another. Such cells, tissues or organs are called xenografts or xenotransplants

Xeroderma
Xeroderma, literally meaning "dry skin", is a condition involving the integumentary system, which in most cases can safely be treated with emollients and/or moisturizers. Xeroderma occurs most commonly on the scalp, lower legs, arms, the knuckles, the sides of the abdomen and thighs

Xerography
Xerography is a dry photocopying technique invented by Chester Carlson in 1938, for which he was awarded on October 6, 1942. Carlson originally called his invention electrophotography

Xerophthalmia
Xerophthalmia is a medical condition in which the eye fails to produce tears. It may be caused by a deficiency in vitamin A and is sometimes used to describe that lack, although there may be other causes.

Xerophyte
A xerophyte or xerophytic organism is a plant which has adapted to survive in an environment that lacks water, such as a desert. Xerophytic plants may have adapted shapes and forms or internal functions that reduce their water loss or store water during long periods of dryness

Xeroradiography
Xeroradiography is a type of x-ray in which a picture of the body is recorded on paper rather than on film. In this technique, a plate of selenium, which rests on a thin layer of aluminium oxide, is charged uniformly by passing it in front of a .

Xerox
Xerox Corporation is an American multinational document management corporation that produced and sells a range of color and black-and-white printers, multifunction systems, photo copiers, digital production printing presses, and related consulting services and supplies

Xhosa
The Xhosa people are speakers of Bantu languages living in south-east South Africa, and in the last two centuries throughout the southern and central-southern parts of the country.

Xi
Xi is the 14th letter of the Greek alphabet. It is pronounced in Modern Greek, and generally or in English

Xi
Xi may refer to:*Xi , a Greek letter*XI, Roman numeral 11*Xi , the world's first console-based alternate reality game*Xi baryon, a range of baryons with one up or down quark and two heavier quarks

Xian (Taoism)
Xian is a Chinese word for an enlightened person, translatable in English as:*"spiritually immortal; transcendent; super-human; celestial being"

Xiang (place)
Xiang was a place in Guangxi province where there was an idol to Gan. Feeling that Gan was an embodiment of immorality and other evils, Hong Xiuquan, Lu Liu and Feng Yunshan destroyed the idol and desecrated the temple to Gan in the 1840s.

Xiao (rank)
Xiao is the rank held by field officers in the military of both the People's Republic of China and the Republic of China. The People's Liberation Army uses four grades while the Republic of China uses only three, with the rank equivalent to the fourth being treated as a general officer rank. This difference is found in other militaries as well. For example

XIII
XIII may refer to:* 13 or XIII in Roman numerals* XIII , a Belgian comic book series by Jean Van Hamme and William Vance* XIII , a video game based on the comic book series

XIII (TV Mini-series)
XIII: The Conspiracy is a Franco-Canadian 2008 TV mini-series based on the Belgian comic book series and game of the same title, originally by Jean Van Hamme and William Vance, revolving around an amnesiac protagonist who seeks to discover his concealed past. The series was directed by Duane Clark, stars Val Kilmer and Stephen Dorff, was produced by Prodigy Pictures and Cipango Films

Xing (band)
XING is a 5-member male group from South Korea. The members include Kim Dong Geun, Kim Jin Wan, Hwang Doo Hwan, Jin Hyeon Jin and Kim Wan Chul

Xinjiang
Xinjiang is an autonomous region of the People's Republic of China. It is the largest Chinese administrative division and spans over 1.6 million km2

Xiphoid process
The xiphoid process, or xiphisternum or metasternum, is a small cartilaginous process of the lower part of the sternum which is usually ossified in the adult human. By age 15 to 29, the xiphoid usually fuses to the body of the sternum with a fibrous joint. Unlike the synovial articulation of major joints, this is non-movable

Xiphosura
Xiphosura is an order of marine chelicerates which includes a large number of extinct lineages and only four recent species in the family Limulidae, which include the horseshoe crabs

XL
XL or xl may stand for:* 40 in Roman numeralsIn business:* Extra large, a clothing size* XL Airways France, a French airline* XL Airways Germany, a German charter airline* XL Axiata, an Indonesian mobile phone network operator

XM (album)
-Band:* Steven Wilson - Guitar, Lead Vocals* Colin Edwin - Bass* Richard Barbieri - Keyboards, Synth* Gavin Harrison - Drums* John Wesley - Guitar, Backing Vocals -Credits:* XM Recording Engineer – Quinton Roebuck

XMA (s IT)
The eXtranet Multichannel Architecture is a software developed since 2003 by the Austrian s IT Solutions Spardat GmbH to implement its banking client software such that it can interact with different clients in its infrastructure that access an Archive utility, which archives specific listings used by the bank or its clients

Xmas
"Xmas" is a common abbreviation of the word "Christmas". It is sometimes pronounced , but it, and variants such as "Xtemass", originated as handwriting abbreviations for the typical pronunciation

XR (Ford Australia)
The term XR, first coined in 1991 on the EB Falcon, is a term used to describe some high performance Ford vehicles in Australia, having copied the term from Ford Europe who used XR2 for the Ford Fiesta, XR3 for the Ford Escort and XR4 for the Ford Sierra from the mid 80s. XR stands for Experimental Research

XS (video game)
XS is a first-person shooter released by SCi and GT Interactive on December 31, 1996. While not a runaway success, the game introduced many aspects which were later used in games such as Unreal.- Storyline :