This page will contain videos about X, as they become available.

X


X is the twenty-fourth letter of the Latin alphabet. It is also the form of St Andrew's Cross.

/ks/ was in Ancient Greece written as Chi 'Χ' (Western Greek) or Xi 'Ξ' (Eastern Greek). In the end, Chi was standardized as /k_h/ (/x/ in Modern Greek) as well as Xi for /ks/. But the Etruscans took over X from older Western Greek, therefore, it stood for /ks/ in Etruscan and /ks/ and /gs/ [gz] in Latin. Only in Kurdish, Azeri, Uzbek, Tatar and Lojban as well as the IPA and SAMPA (the latter is used here) is X pronounced [x] (as in German Bach). Some scholars claim that Latin X is not identical with Greek Χ.

It is also controversial whether Psi, Chi (Khi) and Xi are Greek inventions or whether they are ultimately of Semitic origin.

The letter X is not used in the Italian language, except for words borrowed from other languages, or names of foreigners. No words in the Basic English vocabulary begin with X, but it occurs in words beginning with other letters.

The letter X is spoken as X-ray in the NATO phonetic alphabet.

Meanings for X

  • In a general sense, X represents an unknown or secret, as in project X or mister X.
  • Members of the Nation of Islam change their surnames to "X" to symbolize that their African names were lost in slavery, an example is Malcolm X.
  • In aeronautics, X is the designation given to an experimental aircraft of the US government, for instance, the X-1 rocketplane that first broke the sound barrier. It is also a prefix to experimental types of US military aircraft, for instance, the XB-70.
  • In anime, X is the title of a series based on the manga X/1999 (see X (anime)).
  • In art X alludes to the infinite joy of creation.
  • In astronomy, Planet X is a hypothetical planet in the Solar System beyond the orbit of Pluto.
  • In beverages, X is a symbol for an alcoholic proof of 50; multiple Xes indicate multiples of 50.
  • In cabalistic philosophy X references both birth and death.
  • In clothing X is used as an abbreviation for extra, such as XXL for extra-extra-large or XM for extra-medium.
  • In computing:
    • X is the name of a free graphical windowing system developed at MIT and standard on Unix and Linux; see X Window System.
    • X is often used as a symbol of multiplication, as in denoting the spin (and, later, transfer) speed of CDs and DVDs compared to an original standard speed. This usage is a corruption of the multiplication symbol ×. The data transfer speed for 1X CDs is 153,600 bytes/second and one for 1X DVDs is 1,385,000 bytes/second (approximately 9.02 times faster).
    • X is used as an abbreviation for the Apple operating system Mac OS X.
    • x is the repetition operator in Perl programming language.
  • In French education, X is a nickname for the École Polytechnique.
  • In electrical engineering, X is the symbol for reactance.
  • In English,
    • X is an abbreviation for Christ, as in Xmas (Christmas), X(t)ian (Christian), and Xianity (Christianity).
    • X is a symbol for a kiss, as in love notes. (See Hugs and Kisses.)
    • X is an abbreviation for cross in words like Xing (crossing), or to sign with a cross (often for illiteracy).
    • X also serves as other abbreviations, such as Xtal (Crystal), reXn (reaction), Xlation (translation), and SXSW (South by Southwest Festival).
  • In American slang, X is often used as an abbreviation of ecstasy (MDMA), a synthetic drug.
  • In film
    • X is a rating given to films suitable for an adult-only audience; see X-rated. NC-17 has replaced the X rating in the US. The UK replaced the X rating with the 18 certificate. Australia retains the X rating.
    • X is the name of a 1928 German film; see X (film)
    • The X-Files was a popular 1990s American science fiction television series.
  • In financial securities, X is the stock symbol for United States Steel Corporation.
  • In games, X is representation for a cross in games like tic tac toe (naughts and crosses)
  • In genetics X denotes the X chromosome.
    • In gender XX denotes female in the XY sex-determination system.
  • In mathematics,
    • x commonly represents an unknown variable. Even though any letter can be used, x is the most common by far. This usage can be traced back to the Arabic word ?ay 'thing' which was spelled with an initial x in Old Spanish or (according to other sources) an abbreviation of Latin causa which was the translation of Arabic š.
    • x is the usual symbol for the variable represented on the horizontal axis (ordinate) in analytic geometry.
    • x means 10 in Roman numbers
  • In military science, X is the US Navy hull classification symbol for Submersible Craft.
  • In photography X denotes exact time in flash synchronization.
  • In physics, the X-ray is a form of electromagnetic radiation.
  • In popular music,
    • X is the name of a Los Angeles punk rock band (see X (US band)).
    • X is the name of an Australian punk rock band (see X (Australian band)).
    • X was the initial name of the Japanese visual kei rock band X Japan.
  • In pornography XXX relates, unsurprisingly, to sex.
  • As the first letter of a postal code,
    • In Canada, X stands for Nunavut and the Northwest Territories.
  • In U.S. politics, X is the pseudonym of the person who blew the whistle on the Watergate crisis.
  • In U.S. public policy, X is the author (George F. Kennan) of the X article published in Foreign Affairs.
  • In Roman numerals, X denotes ten.
  • In semiotics, an X over something denotes elimination, prohibition or erasure.
  • In sociology X denotes Generation X.
  • X is a symbol worn on the hand to denote that someone is straight edge. It is also frequently tattooed on other parts of the body, or worn on clothing, sometimes in triplicate (XXX). Straight-edgers frequently also append Xs to their names, i.e. write their names with Xs, such that 'Jack' would be written XjackX. Straight edge itself is comonly abbreviated to 'sxe' (S.E. with an X in the middle).
  • In superhero comic books, an X usually denotes a connection to the popular X-Men franchise, especially when used as a prefix.
  • In treasure-hunting X is used to designate the location of treasure, i.e. X marks the spot.
  • In video games, X is the name of the main character in the Mega Man spinoff, Mega Man X.
  • X is a rollercoaster at Six Flags Magic Mountain.
  • X is a Japanese manga title produced by CLAMP which has also been adapted into a 1996 feature film and a 2001 television series. It is also known by the title X/1999.

This page about X includes information from a Wikipedia article.
Additional articles about X
News stories about X
External links for X
Videos for X
Wikis about X
Discussion Groups about X
Blogs about X
Images of X

The letter X is spoken as X-ray in the NATO phonetic alphabet. See also: Chinese Valentine's Day, Saint Valentine's Day Massacre. No words in the Basic English vocabulary begin with X, but it occurs in words beginning with other letters. This day is choosen probably because it is one day before the Saint Anthony´s day, there known as the marriage saint, when many single women make popular rituals in order to find a good husband (or, more modernly at least a boyfriend). The letter X is not used in the Italian language, except for words borrowed from other languages, or names of foreigners. On this day, boyfriends and girlfriends, husbands and wives, exchange gifts (lingerie, chocolates, and more), cards and usually a flower bouquet. It is also controversial whether Psi, Chi (Khi) and Xi are Greek inventions or whether they are ultimately of Semitic origin. Instead, on June 12, "Dia dos Namorados" (or "Boyfriend's/Girlfriend's Day") is celebrated.

Some scholars claim that Latin X is not identical with Greek Χ. In Brazil, there is no such day as Valentine's Day. Only in Kurdish, Azeri, Uzbek, Tatar and Lojban as well as the IPA and SAMPA (the latter is used here) is X pronounced [x] (as in German Bach). It is called "The Night of Sevens", on the 7th day of the 7th month of the lunar calendar; the next one being August 11, 2005 [2] (http://www.chinesefortunecalendar.com/77.htm). But the Etruscans took over X from older Western Greek, therefore, it stood for /ks/ in Etruscan and /ks/ and /gs/ [gz] in Latin. In Chinese Culture, there is a similar counterpart of the Valentine's Day. In the end, Chi was standardized as /k_h/ (/x/ in Modern Greek) as well as Xi for /ks/. The return gift should be white (hence the name), and is often lingerie.

/ks/ was in Ancient Greece written as Chi 'Χ' (Western Greek) or Xi 'Ξ' (Eastern Greek). Many men, however, give only to their girlfriends. It is also the form of St Andrew's Cross. By a further marketing effort, a reciprocal day, called White Day has emerged. On this day (March 14), men are supposed to return the favour by giving something to those who gave them chocolates on Valentine's Day. X is the twenty-fourth letter of the Latin alphabet. This chocolate is known as giri-choco (義理チョコ), from the words giri (obligation) and choco, a common short version of chokoreeto (チョコレート), meaning chocolate.
. Rather than being voluntary however, this has become for many women – especially those who work in offices – an obligation, and they give chocolates to all their male co-workers, sometimes at significant personal expense.

It is also known by the title X/1999. In Japan, and Korea Valentine's Day has emerged, thanks to a concentrated marketing effort, as a day on which women give chocolates to men they like. X is a Japanese manga title produced by CLAMP which has also been adapted into a 1996 feature film and a 2001 television series. Those without a significant other often speak with sarcasm by referring to Valentine's Day as Single's Awareness Day. X is a rollercoaster at Six Flags Magic Mountain. The day has come to be associated with a generic platonic greeting of "Happy Valentine's Day.". In video games, X is the name of the main character in the Mega Man spinoff, Mega Man X. Starting in the 1980s, the diamond industry began to promote Valentine's Day as occasion for the giving of fine jewelry.

X marks the spot. Such gifts typically include roses and chocolate. In treasure-hunting X is used to designate the location of treasure, i.e. In the United States in the second half of the 20th century, the practice of exchanging cards was extended to include the giving of all manner of gifts, usually from the man to the woman. In superhero comic books, an X usually denotes a connection to the popular X-Men franchise, especially when used as a prefix. Her father operated a large book and stationery store, and she took her inspiration from an English valentine she had received. (Since 2001, the Greeting Card Association has been giving an annual "Esther Howland Award for a Greeting Card Visionary".). with an X in the middle). Howland (1828 - 1904) of Worcester, Massachusetts.

Straight edge itself is comonly abbreviated to 'sxe' (S.E. In the United States, the first mass-produced valentines of embossed paper lace were produced and sold shortly after 1847 by Esther A. write their names with Xs, such that 'Jack' would be written XjackX. Valentine's Day was probably imported into North America in the 19th century with settlers from Britain. Straight-edgers frequently also append Xs to their names, i.e. In most versions of these legends, February 14 is the date associated with his martyrdom. It is also frequently tattooed on other parts of the body, or worn on clothing, sometimes in triplicate (XXX). Among the legends are ones that assert that:.

X is a symbol worn on the hand to denote that someone is straight edge. It is probable that many of the legends about St. Valentine were invented during this period. In sociology X denotes Generation X. A 14th century valentine is said to be in the collection of the British Library. In semiotics, an X over something denotes elimination, prohibition or erasure. It was common during that era for lovers to exchange notes on this day and to call each other their "Valentines". In Roman numerals, X denotes ten. By the 17th century a valentine was extended to the gift given, some pretty token.

Kennan) of the X article published in Foreign Affairs. In the following century, one of John Lydgate's minor poems is "A balade made..in wyse of chesing loues at Saint Valentynes day" which indicates that the manner of choosing was drawing lots. public policy, X is the author (George F. This belief is mentioned in Geoffrey Chaucer's Parlement of Foules(1381) that. In U.S. Valentine's Day with romantic love was in the 14th century in England and France, where February 14 was traditionally the day on which birds paired off to mate. politics, X is the pseudonym of the person who blew the whistle on the Watergate crisis. The first recorded association of St.

In U.S. Hoeller assesses Valentinius on the subject : "In addition to baptism, anointing, eucharist, the initiation of priests and the rites of the dying, the Valentinian Gnosis mentions prominently two great and mysterious sacraments called "redemption" (apolytrosis) and "bridal chamber" respectively" [1] (http://www.gnosis.org/valentinus.htm). In Canada, X stands for Nunavut and the Northwest Territories. Stephan A. As the first letter of a postal code,

    . In his teachings, the marriage bed assumed a central place in his version of Christian love, an emphasis sharply in contrast with the asceticism of mainstream Christianity. In pornography XXX relates, unsurprisingly, to sex. The influential Gnostic teacher Valentinius was a candidate for Bishop of Rome in 143.

    X was the initial name of the Japanese visual kei rock band X Japan. Valentine's Day as an official holiday from its calendar. X is the name of an Australian punk rock band (see X (Australian band)). In 1969, as part of a larger effort to pare down the number of saint days of purely legendary origin, the Church removed St. X is the name of a Los Angeles punk rock band (see X (US band)). Valentine were donated by Pope Gregory XVI to the Whitefriar Street Carmelite Church in Dublin, Ireland, which has become a popular place of pilgrimage on February 14. In popular music,

      . In the 19th century, relics of St.

      In physics, the X-ray is a form of electromagnetic radiation. There is a widespread legend that he created the day to counter the practice held on Lupercalia of young men and women pairing off as lovers by drawing their names out of an urn, but this practice is not attested in any sources from that era. In photography X denotes exact time in flash synchronization. Valentine was first declared to be on February 14 by Pope Gelasius I in 496. In military science, X is the US Navy hull classification symbol for Submersible Craft. The feast of St. x means 10 in Roman numbers. Valentine and romantic love is not mentioned in any early histories and is regarded by historians as purely a matter of legend (see below).

      x is the usual symbol for the variable represented on the horizontal axis (ordinate) in analytic geometry. The connection between St. This usage can be traced back to the Arabic word ?ay 'thing' which was spelled with an initial x in Old Spanish or (according to other sources) an abbreviation of Latin causa which was the translation of Arabic š. According to the Catholic Encyclopedia (1908), at least three different Saints Valentine, all of them martyrs and all quite obscure, are mentioned in the early martyrologies under the date of February 14:. Even though any letter can be used, x is the most common by far. Young women especially would come forth voluntarily for the occasion, in the belief that being so touched would render them fruitful and bring easy childbirth. x commonly represents an unknown variable. As part of the purification ritual, the priests of Lupercus would sacrifice goats to the god, and after drinking wine, they would run through the streets of Rome holding pieces of the goat skin above their heads, touching anyone they met.

      In mathematics,

        . In Ancient Rome, the day of February 15 was Lupercalia, the festival of Lupercus, the god of fertility, who was represented as half-naked and dressed in goat skins. In gender XX denotes female in the XY sex-determination system. In the calendar of Ancient Athens, the period between mid January and mid February was the month of Gamelion, which was dedicated to the sacred marriage of Zeus and Hera. In genetics X denotes the X chromosome.
          . The association of the middle of February with love and fertility dates to ancient times. In games, X is representation for a cross in games like tic tac toe (naughts and crosses).
          .

          In financial securities, X is the stock symbol for United States Steel Corporation. The association also estimates that women purchase approximately 85 percent of all valentines. The X-Files was a popular 1990s American science fiction television series. The Greeting Card Association estimates that, world-wide, approximately one billion valentine cards are sent each year, making the day the second largest card-sending holiday of the year behind Christmas. X is the name of a 1928 German film; see X (film). Starting in the 19th century, the practice of hand writing notes has largely given way to the exchange of mass-produced greeting cards. Australia retains the X rating. The day is now most closely associated with the mutual exchange of love notes in the form of "valentines." Modern Valentine symbols include the heart-shaped outline and the figure of the winged Cupid.

          The UK replaced the X rating with the 18 certificate. The day's associations with romantic love arrived after the High Middle Ages, during which the concept of romantic love was formulated. X is a rating given to films suitable for an adult-only audience; see X-rated. NC-17 has replaced the X rating in the US. The history of Valentine's day can be traced back to an obscure Catholic Church feast day, said to be in honor of Saint Valentine, are discussed below. In film

            . Valentine's Day falls on February 14, and is the traditional day on which lovers in certain cultures let each other know about their love, commonly by sending Valentine's cards, which are often anonymous. In American slang, X is often used as an abbreviation of ecstasy (MDMA), a synthetic drug. Valentine secretly helped arrange marriages.

            X also serves as other abbreviations, such as Xtal (Crystal), reXn (reaction), Xlation (translation), and SXSW (South by Southwest Festival). During a ban on marriages of Roman soldiers by the Emperor Claudius II, St. X is an abbreviation for cross in words like Xing (crossing), or to sign with a cross (often for illiteracy). Valentine was to be martyred for being a Christian, he passed a love note to his jailer's daughter which read, "From Your Valentine.". (See Hugs and Kisses.). On the evening before St. X is a symbol for a kiss, as in love notes. a martyr in North Africa, about whom little else is known.

            X is an abbreviation for Christ, as in Xmas (Christmas), X(t)ian (Christian), and Xianity (Christianity). a bishop of Interamna (modern Terni) also suffered martyrdom in the second half of the 3rd century and was also buried on the Via Flaminia, but in a different location than the priest. In English,

              . a priest in Rome who suffered martyrdom in the second half of the 3rd century and was buried on the Via Flaminia. In electrical engineering, X is the symbol for reactance. In French education, X is a nickname for the École Polytechnique.

              x is the repetition operator in Perl programming language. X is used as an abbreviation for the Apple operating system Mac OS X. The data transfer speed for 1X CDs is 153,600 bytes/second and one for 1X DVDs is 1,385,000 bytes/second (approximately 9.02 times faster). This usage is a corruption of the multiplication symbol ×.

              X is often used as a symbol of multiplication, as in denoting the spin (and, later, transfer) speed of CDs and DVDs compared to an original standard speed. X is the name of a free graphical windowing system developed at MIT and standard on Unix and Linux; see X Window System. In computing:

                . In clothing X is used as an abbreviation for extra, such as XXL for extra-extra-large or XM for extra-medium.

                In cabalistic philosophy X references both birth and death. In beverages, X is a symbol for an alcoholic proof of 50; multiple Xes indicate multiples of 50. In astronomy, Planet X is a hypothetical planet in the Solar System beyond the orbit of Pluto. In art X alludes to the infinite joy of creation.

                In anime, X is the title of a series based on the manga X/1999 (see X (anime)). It is also a prefix to experimental types of US military aircraft, for instance, the XB-70. In aeronautics, X is the designation given to an experimental aircraft of the US government, for instance, the X-1 rocketplane that first broke the sound barrier. Members of the Nation of Islam change their surnames to "X" to symbolize that their African names were lost in slavery, an example is Malcolm X.

                In a general sense, X represents an unknown or secret, as in project X or mister X.