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X is the twenty-fourth letter in the modern Latin alphabet
Latin alphabet

The Latin alphabet, also called the Roman alphabet, is the most widely used alphabetic writing system in the world today. It evolved from the western variety of the Greek alphabet called the Cumae alphabet, and was initially developed by the Ancient Romes to write the Latin....
. Its name in English
English language

English is a West Germanic language that originated in Anglo-Saxon England and has lingua franca status in many parts of the world as a result of the military, economic, scientific, political and cultural influence of the British Empire in the 18th, 19th and early 20th centuries and that of the United States from the mid 20th century onwa...
 is spelled ex , plural exes .

consonant cluster
Consonant cluster

In linguistics, a consonant cluster is a group of consonants which have no intervening vowel. In English, for example, the groups and are consonant clusters in the word splits....
  was, in Ancient Greek
Ancient Greek

Ancient Greek is the historical stage in the development of the Greek language spanning across the Archaic Greece , Classical Greece , and Hellenistic civilization periods of ancient Greece and the classical antiquity....
, written as either Chi
Chi (letter)

Chi is the 22nd letter of the Greek alphabet, pronounced as [kai] in English. Its value in Ancient Greek was an aspirated voiceless velar plosive ....
 ? (Western Greek) or Xi ? (Eastern Greek). In the end, Chi was standardized as ( in Modern Greek
Modern Greek

Modern Greek refers the varieties of Greek spoken in the modern era. The beginning of the "modern" period of the language is often symbolically assigned to the fall of the Byzantine Empire in 1453, even though that date marks no clear linguistic boundary and many characteristic modern features of the language had been present centuries earli...
), while Xi was standardized for . But the Etruscans had taken over ? from older Western Greek; therefore, it stood for in Etruscan and Latin
Latin

Latin is an Italic language, historically spoken in Latium and Ancient Rome. Through the Military history of the Roman Empire, Latin spread throughout the Mediterranean and a large part of Europe....
.

It is unknown whether the letters Chi and Xi are Greek inventions, or whether they are ultimately of Semitic
Semitic

In linguistics and ethnology, Semitic was first used to refer to a language family of largely Middle Eastern origin, now called the Semitic languages....
 origin.






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X is the twenty-fourth letter in the modern Latin alphabet
Latin alphabet

The Latin alphabet, also called the Roman alphabet, is the most widely used alphabetic writing system in the world today. It evolved from the western variety of the Greek alphabet called the Cumae alphabet, and was initially developed by the Ancient Romes to write the Latin....
. Its name in English
English language

English is a West Germanic language that originated in Anglo-Saxon England and has lingua franca status in many parts of the world as a result of the military, economic, scientific, political and cultural influence of the British Empire in the 18th, 19th and early 20th centuries and that of the United States from the mid 20th century onwa...
 is spelled ex , plural exes .

History

The consonant cluster
Consonant cluster

In linguistics, a consonant cluster is a group of consonants which have no intervening vowel. In English, for example, the groups and are consonant clusters in the word splits....
  was, in Ancient Greek
Ancient Greek

Ancient Greek is the historical stage in the development of the Greek language spanning across the Archaic Greece , Classical Greece , and Hellenistic civilization periods of ancient Greece and the classical antiquity....
, written as either Chi
Chi (letter)

Chi is the 22nd letter of the Greek alphabet, pronounced as [kai] in English. Its value in Ancient Greek was an aspirated voiceless velar plosive ....
 ? (Western Greek) or Xi ? (Eastern Greek). In the end, Chi was standardized as ( in Modern Greek
Modern Greek

Modern Greek refers the varieties of Greek spoken in the modern era. The beginning of the "modern" period of the language is often symbolically assigned to the fall of the Byzantine Empire in 1453, even though that date marks no clear linguistic boundary and many characteristic modern features of the language had been present centuries earli...
), while Xi was standardized for . But the Etruscans had taken over ? from older Western Greek; therefore, it stood for in Etruscan and Latin
Latin

Latin is an Italic language, historically spoken in Latium and Ancient Rome. Through the Military history of the Roman Empire, Latin spread throughout the Mediterranean and a large part of Europe....
.

It is unknown whether the letters Chi and Xi are Greek inventions, or whether they are ultimately of Semitic
Semitic

In linguistics and ethnology, Semitic was first used to refer to a language family of largely Middle Eastern origin, now called the Semitic languages....
 origin. Chi was placed toward the end of the Greek alphabet, after the Semitic letters, along with Phi
Phi (letter)

Phi , pronounced [] in Modern Greek language and as [] in English, is the 21st letter of the Greek alphabet. In modern Greek, it represents [], a voiceless labiodental fricative....
, Psi
Psi (letter)

Psi is the 23rd letter of the Greek alphabet and has a Greek numerals value of 700. In both Classical Greek and Modern Greek, the letter indicates the combination /ps/ ....
, and Omega
Omega

Omega is the 24th and last letter of the Greek alphabet. In the Greek numerals it has a value of 800. The word literally means "great O" , as opposed to Omicron, which means "little O" ....
, suggesting that it was an innovation; further, there is no letter corresponding specifically to the sound /ks/ in Semitic. There was a Phoenician letter
Phoenician Heth
?eth with a probable sound , somewhat similar to , but this was adopted into Greek as first the consonant /h/, and later, the long vowel Eta
ETA

or ETA , is an illegal and armed Basque nationalist and separatist organisation. Founded in 1959, it evolved from a group advocating traditional cultural ways to a paramilitary group demanding Basque independence....
 (?,?), and does not seem to have been the source of Greek Chi. The Phoenician letter
Phoenician Samekh
Samekh (representing /s/) is usually considered the inspiration for Greek Xi, but as noted, Chi had a graphically distinct shape from Xi—although it may possibly have been another variant originally based on samekh. The original form of samekh may have been an Egyptian hieroglyph for the Djed
Djed

The Djed symbol is a pillar-like ancient Egyptian symbol representing stability. It has been interpreted as the backbone of the Ancient Egypt god Osiris, especially in the form Banebdjedet ....
 column, but this too is uncertain, as no intervening Proto-Sinaitic form of this letter is attested.

Usage

In the International Phonetic Alphabet
International Phonetic Alphabet

The International Phonetic Alphabet "The acronym 'IPA' strictly refers [...] to the 'International Phonetic Association'. But it is now such a common practice to use the acronym also to refer to the alphabet itself that resistance seems pedantic....
, represents a voiceless velar fricative
Voiceless velar fricative

The voiceless velar fricative, informally known as the hard ch, is a type of consonantal sound used in some Speech communication languages....
.

In some languages, as a result of assorted phonetic changes, handwriting adaptations or simply spelling convention, X has other pronunciations:
  • Basque
    Basque language

    Basque is the language spoken by the Basque people who inhabit the Pyrenees in North-Central Spain and the adjoining region of South-Western France....
     or Leonese
    Leonese language

    The Leonese language was developed from Vulgar Latin with contributions from the pre-Roman languages which were spoken in the territory of the Spanish provinces of Le?n , Zamora, and Salamanca and in some villages in the District of Bragan?a, Portugal....
    : as a spelling for .
  • Dutch
    Dutch language

    Dutch is a West Germanic languages spoken by over 22 million people as a first language, and about 5 million people as a second language."1% of the EU population claims to speak Dutch well enough in order to have a conversation." Outside the European Union the number of second language speakers of Dutch is very small. Most native...
    : The island of Texel is pronounced as Tessel. This is because ss was written with a ligature closely resembling the x.
  • English
    English language

    English is a West Germanic language that originated in Anglo-Saxon England and has lingua franca status in many parts of the world as a result of the military, economic, scientific, political and cultural influence of the British Empire in the 18th, 19th and early 20th centuries and that of the United States from the mid 20th century onwa...
    : X is a double consonant or, rather, a sign for the compound consonants ; or sometimes when followed by an accented syllable beginning with a vowel, or when followed by silent h and an accented vowel (e.g. exhaust, exam); usually at the beginnings of words (e.g. xylophone), and in some compounds keeps the sound, as in (e.g. meta-xylene). It also makes the sound in words ending in -xion (typically used only in British-based spellings
    American and British English spelling differences

    American and British English spelling differences are one aspect of American and British English differences.The spelling systems of Commonwealth of Nations countries, for the most part, closely resemble the British system....
     of the language; American spellings tend to use -ction). It can also represent the sounds or , for example, in the words luxury and sexual, respectively. Final x is always (e.g. ax/axe) except in loan words such as faux (see French, below).
  • French
    French language

    French is a Romance language spoken around the world by around 80 million people as first language, by 190 million as second language, and by about another 200 million people as an acquired tongue, with significant speakers in 54 countries....
    : at the ends of words, silent (or in liaison
    Liaison

    Liaison may refer to:* Liaison , the pronunciation of a word-final consonant due to a following vowel sound in French* Liaison officer, a military officer who coordinates different forces or national units usually at Staff level...
     if the next word starts with a vowel). This usage arose as a handwriting alteration of final -us. Two exceptions are pronounced [s]: six and dix.
  • In Italian
    Italian language

    Italian is a Romance languages spoken by about 63 million people as a first language, primarily in Italy. In Switzerland, Italian is one of four Linguistic geography of Switzerlands....
    , X is always pronounced , as in the words uxorio, extra, xilofono. It is also used, mainly amongst younger generations as a short form for "per" meaning "for", for example, x sempre (forever).
  • In Norwegian
    Norwegian language

    Norwegian is a North Germanic languages language spoken primarily in Norway, where it is an official language. It is also spoken as a second language among Norwegian-Americans in the United States of America, especially in the central northern states....
    , X is generally pronounced , but since the nineteenth century there has been a tendency to spell it out as ks whenever possible; it may still be retained in names of people, though it is fairly rare, and occurs mostly in foreign words and SMS language
    SMS language

    SMS language or Textese is the English language slang used in mobile phone Text messaging, social network services and instant messaging....
    .
  • Spanish
    Spanish language

    Spanish or Castilian is a Romance languages that originated in northern Spain, and gradually spread in the Kingdom of Castile and evolved into the principal language of government and trade....
    : In Old Spanish, X was pronounced , as it is still currently in other Iberian languages
    Iberian languages

    Iberian languages is a generic term for the languages currently or formerly spoken in the Iberian peninsula....
    . Later, the sound evolved to a hard sound. In modern Spanish, the hard sound is spelled with a j, or with a g before e and i, though x is still retained for some names (notably México, which alternates with Méjico). Now, X represents the sound (word-initially), or the consonat clusters and (e.g. oxígeno, examen). Even rarer; like in Old Spanish, the x can be pronounced as in modern day in some proper nouns such as Raxel (a variant of Rachel
    Rachel

    Rachel is the second and favorite wife of Jacob and mother of Joseph and Benjamin, first mentioned in the Book of Genesis of the Hebrew Bible....
    ) and Xelajú.
  • Galician
    Galician language

    Galician is a language of the Iberian Romance languages branch, spoken in Galicia , an Autonomous communities of Spain located in northwestern Spain, as well as in small bordering zones in the neighbouring autonomous communities of Asturias and Castile and Le?n and in Northern Portugal....
     and Leonese language
    Leonese language

    The Leonese language was developed from Vulgar Latin with contributions from the pre-Roman languages which were spoken in the territory of the Spanish provinces of Le?n , Zamora, and Salamanca and in some villages in the District of Bragan?a, Portugal....
    : In Galician (a language related to Portuguese and spoken in Northwestern Spain), and Leonese language, in Spain, x is pronounced as in most cases. In cultisms, such as 'taxativo' (taxative), the x is pronounced as . However, Galician speakers tend to pronounce it as , especially when it appears in implosive position, such as in 'externo' (extern).
  • In Portuguese
    Portuguese language

    Portuguese is a Romance language that originated in what is now Galicia and Portugal. It is derived from the Latin language spoken by the Romanization Pre-Roman peoples of the Iberian Peninsula around 2000 years ago....
    , x can have four sounds: the most common is , as in 'xícara' (cup). The other sounds are: as in 'fênix/fénix' (phoenix) and , as in 'próximo' (close/next). The most rare is , as in 'exagerado' (exaggerate).
  • In Albanian
    Albanian language

    Albanian is an Indo-European languages spoken by nearly 6 million people, primarily in Albania and Kosovo but also in other areas of the Balkans in which there is an Albanian population, including the west of the Republic of Macedonia, Montenegro, and southern Serbia....
    , x represents , while the digraph
    Digraph

    Digraph may refer to:* Digraph , a pair of characters used to write one phoneme or a sequence of phonemes that does not correspond to the normal values of the two characters combined...
     xh represents .
  • Polish
    Polish language

    Polish , an official language of Poland, has the largest number of speakers of any West Slavic languages. Polish-speakers use the language in a uniform manner through most of Poland, and it has a regular orthography....
     doesn't use X. In loanwords, X is either replaced by ks like in 'ekstra' (extra), or gz like in 'egzotyczny' (exotic).
  • In the German
    German language

    German is a West Germanic languages, thus related to and classified alongside English language and Dutch language. It is one of the world's world language and the most widely spoken mother tongue in the European Union....
     and Italian
    Italian language

    Italian is a Romance languages spoken by about 63 million people as a first language, primarily in Italy. In Switzerland, Italian is one of four Linguistic geography of Switzerlands....
     languages, X is used mainly in foreign loan words.
  • In Maltese
    Maltese language

    Maltese is the national language of Malta, and a co-official Languages of Malta alongside English language,while also serving as an Languages of the European Union European Union, the only Semitic languages so distinguished....
     x is pronounced
  • In Vietnamese
    Vietnamese language

    Vietnamese , formerly known under French colonization as Annamese , is the national language and official language language of Vietnam. It is the mother tongue of the Vietnamese people , who constitute 86% of Demographics of Vietnam, and of about three million overseas Vietnamese, most of whom live in the United States....
     x is pronounced


Additionally, in languages for which the Latin alphabet has been adapted only recently, x has been used for various sounds, in some cases inspired by European usage, but in others, for consonants uncommon in Europe. For these no Latin letter stands out as an obvious choice, and since most of the various European pronunciations of x can be written by other means, the letter becomes available for more unusual sounds.
  • X has its IPA value in e.g. Kurdish
    Kurdish language

    The Kurdish language is a term used for the language spoken by Kurdish people. It is mainly concentrated in the parts of Iran, Iraq, Syria and Turkey....
    , Azerbaijani
    Azerbaijani language

    Azerbaijani is a language belonging to the Turkic languages language family, spoken in southwestern Asia, primarily in Azerbaijan and northwestern Iran....
    , Uzbek
    Uzbek language

    Uzbek is a Turkic languages and the official language of Uzbekistan. It has about 23.5 million native speakers, and it is spoken by the Uzbeks in Uzbekistan and elsewhere in Central Asia....
    , Tatar
    Tatar language

    The Tatar language is a Turkic languages language spoken by the Tatars....
     and Lojban
    Lojban

    Lojban is a constructed language, syntactically unambiguous human language based on First-order logic. Its predecessor is Loglan, the original logical language by James Cooke Brown....
    .
  • In Pashto
    Pashto language

    Pashto , also known as Afghani, is an Indo-European language spoken primarily in Afghanistan and northwestern Pakistan. Pashto belongs to the East Iranian languages branch of the Indo-Iranian languages language family....
    , x represents .
  • In Pirahã
    Pirahã language

    Pirah? is a language spoken by the Pirah? people — an indigenous people of Amazonas , Brazil, who live along the Maici river, a tributary of the Amazon River....
    , x symbolizes the glottal stop .
  • In Hanyu Pinyin, a transcription system for Mandarin Chinese, the letter x represents the voiceless alveolo-palatal fricative
    Voiceless alveolo-palatal fricative

    The voiceless alveolo-palatal fricative is a type of consonantal sound, used in some Speech communication languages. The symbol in the International Phonetic Alphabet that represents this sound is , and the equivalent X-SAMPA symbol is s....
     .
  • Nguni languages: represents the alveolar lateral click .
  • An illustrating example of x as a "leftover" letter is differing usage in three different East Cushitic languages
    East Cushitic languages

    The Lowland East Cushitic languages comprise two dozen languages of the Cushitic languages within Afro-Asiatic languages. They are spoken mainly in Ethiopia, Somalia and Djibouti, but also in parts of Kenya....
    :
    • Afar language
      Afar language

      Afar is a Lowland East Cushitic languages language spoken in Ethiopia, Eritrea and Djibouti. It is believed to have 1.5 million speakers, the Afar people....
      : voiced alveolar implosive
      Voiced alveolar implosive

      The voiced alveolar implosive is a type of consonantal sound, used in some Speech communication languages. The symbol in the International Phonetic Alphabet that represents this sound is , and the equivalent X-SAMPA symbol is d_<....
       
    • Oromo language
      Oromo language

      Oromo, also known as Afaan borana Oromoo, Oromiffa , and sometimes in other languages by variant spellings of these names , is an Afro-Asiatic languages language, and the most widely spoken of the Cushitic languages family....
      : alveolar ejective
      Alveolar ejective

      The alveolar ejective is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is , and the equivalent X-SAMPA symbol is t_>....
       
    • Somali language
      Somali language

      Somali is a member of the East Cushitic languages branch of the Afro-Asiatic languages language family spoken by Somali people in Somalia, Djibouti, Ethiopia, Yemen and Kenya, as well as by the Somali diaspora around the world?an estimated total population of between 10 and 16 million speakers....
      : voiceless pharyngeal fricative
      Voiceless pharyngeal fricative

      The voiceless pharyngeal fricative is a type of consonantal sound, used in some Speech communication languages. The symbol in the International Phonetic Alphabet that represents this sound is h with stroke , and the equivalent X-SAMPA symbol is X....
       


No words in the Basic English
Basic English

Basic English is an English language based controlled language created by Charles Kay Ogden as an international auxiliary language, and as an aid for teaching ESL....
 vocabulary begin with X, but it occurs in words beginning with other letters. It is often found in a word with an E before it. X is the third most rarely used letter in the English language
English language

English is a West Germanic language that originated in Anglo-Saxon England and has lingua franca status in many parts of the world as a result of the military, economic, scientific, political and cultural influence of the British Empire in the 18th, 19th and early 20th centuries and that of the United States from the mid 20th century onwa...
.

Codes for computing


In Unicode
Unicode

Unicode is a computing industry standard allowing computers to consistently represent and manipulate Character expressed in most of the world's writing systems....
 the capital X is codepoint U+0058 and the lower case x is U+0078.

The ASCII
ASCII

American Standard Code for Information Interchange , is a coding standard that can be used for interchanging information, if the information is expressed mainly by the written form of English words....
 code for capital X is 88 and for lowercase x is 120; or in binary
Binary numeral system

The binary numeral system, or notation with a radix of 2. Owing to its straightforward implementation in digital electronic circuitry using logic gates, the binary system is used internally by all modern computers....
 01011000 and 01111000, correspondingly.

The EBCDIC
EBCDIC

Extended Binary Coded Decimal Interchange Code is an 8-bit character encoding used on IBM mainframe operating systems such as z/OS, OS/390, VM and VSE , as well as IBM midrange computer operating systems such as OS/400 and i5/OS ....
 code for capital X is 231 and for lowercase x is 167.

The numeric character reference
Numeric character reference

A numeric character reference is a common markup construct used in SGML and other SGML-based markup languages such as HTML and XML. It consists of a short sequence of character s that, in turn, represent a single character from the Universal Character Set of Unicode....
s in HTML
HTML

HTML, an Acronym and initialism of HyperText Markup Language, is the predominant markup language for Web pages. It provides a means to describe the structure of text-based information in a document?by denoting certain text as links, headings, paragraphs, lists, and so on?and to supplement that text with interactive forms, embedded '...
 and XML are "&#88;" and "&#120;" for upper and lower case respectively.

See also

  • ?, ? : Greek letter Chi
    Chi (letter)

    Chi is the 22nd letter of the Greek alphabet, pronounced as [kai] in English. Its value in Ancient Greek was an aspirated voiceless velar plosive ....
  • ?, ? : Cyrillic Kha
  • ?, Me
    Me (kana)

    ?, in hiragana, or ? in katakana, is one of the Japanese kana, each of which represents one Mora . Both versions are written in two strokes and represent ....
    , a Japanese
    Japanese language

    IPA: [n?iho?go] is a language spoken by over 130 million people in Japan and in Japanese emigrant communities. It is related to the Ryukyuan languages....
     katakana
    Katakana

    is a Japanese language syllabary, one component of the Japanese writing system along with hiragana, kanji, and in some cases the Latin alphabet. The word katakana means "fragmentary kana", as the katakana scripts are derived from components of more complex kanji....
     character
  • ?
    ?

    or is a letter derived from the Latin alphabet. Both glyphs of the majuscule and Lower case forms of this letter are based on the rotated form of a minuscule e; a similar letter with identical minuscule is used in the Pan-Nigerian Alphabet, but has the capital form majuscule , based on a horizontally flipped majuscule E....
    , Hebrew
    Hebrew alphabet

    The Hebrew alphabet consists of 22 letters used for writing the Hebrew language. Five of these letters have a different form when appearing as the last letter in a word....
     aleph
    Aleph

    * Aleph or Alef is the first letter of the Semitic abjads descended from Proto-Canaanite alphabet, Arabic alphabet, Phoenician alphabet, Hebrew alphabet, Syriac alphabet....
  • ?, a Chinese
    Chinese language

    Chinese or the Sinitic language is a language family consisting of language mutually unintelligible to varying degrees. Originally the indigenous languages spoken by the Han Chinese in China, it forms one of the two branches of Sino-Tibetan languages of languages....
     character, pronounced "Yì" in Mandarin Chinese.
  • ?, Gyfu
    Gyfu

    Gyfu is the name for the g-rune in the Old English language rune poem, meaning "gift" or "generosity":The corresponding letter of the Gothic alphabet is g, called giba....
    , a letter in the Anglo-Saxon futhorc
    Anglo-Saxon Futhorc

    Futhorc, a runic alphabet used by the Anglo-Saxons, was descended from the Elder Futhark of 24 runes and contained between 26 and 33 characters....
     runic alphabet used in pre-Norman
    Normans

    The Normans were the people who gave their names to Normandy, a region in northern France. They descended from Viking conquerors of the territory and the native population of mostly Frankish and Gallo-Roman stock....
     Britain
    Britain in the Middle Ages

    England during the Middle Ages was fragmented into a number of independent kingdoms. By the High Middle Ages, after the end of the Viking Age and the Norman Conquest, the kingdom of Kingdom of England comes to rule almost all of the area previously ruled by the Romans; what little territory of Roman Britain that did not fall under Eng...
    .
  • XX
    XX

    XX may refer to:* 20 , in Roman numerals*A Song for XX album by J-pop star Hamasaki Ayumi* XX chromosomes, see XY sex-determination system* Dos Equis , a brand of Mexican beer...
  • XXX
    XXX

    XXX may refer to:* XXX, an identifier for pornography, especially X-rated movies* 30 , XXX in Roman numerals* Super Bowl XXX, held on January 1996...
  • XXXX
    XXXX

    XXXX is a brand of Australian beer brewing in Milton, Queensland, Brisbane by Queensland brewers, Castlemaine Perkins. It enjoys wide popularity in the state of Queensland and is commonly found on-tap in most Queensland pubs and bars....
  • X mark
    X mark

    An x mark is a mark used to indicate the concept of negation as well as affirmation . It is often used opposite the checkmark .It is also used as a replacement for a signature for a person who illiterate....