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J, or j, is the tenth letter in the
Latin alphabet The Latin alphabet or Roman alphabet is the collection of letters originally used by the ancient Romans to write the Latin language. Largely unaltered with the exception of extensions (such as diacritics), it used to write English and the ...
, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its usual name in English is ''jay'' (pronounced ), with a now-uncommon variant ''jy'' ."J", ''Oxford English Dictionary,'' 2nd edition (1989) When used in the
International Phonetic Alphabet The International Phonetic Alphabet (IPA) is an alphabetic system of phonetic notation based primarily on the Latin script. It was devised by the International Phonetic Association in the late 19th century as a standardized representation ...
for the ''y'' sound, it may be called ''yod'' or ''jod'' (pronounced or ).


History

The letter ''J'' used to be used as the swash letter ''I'', used for the letter I at the end of
Roman numerals Roman numerals are a numeral system that originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages. Numbers are written with combinations of letters from the Latin alphabet, ...
when following another I, as in XXIIJ or xxiij instead of XXIII or xxiii for the Roman numeral twenty-three. A distinctive usage emerged in
Middle High German Middle High German (MHG; german: Mittelhochdeutsch (Mhd.)) is the term for the form of German spoken in the High Middle Ages. It is conventionally dated between 1050 and 1350, developing from Old High German and into Early New High German. Hig ...
. Gian Giorgio Trissino (1478–1550) was the first to explicitly distinguish I and J as representing separate sounds, in his ''Ɛpistola del Trissino de le lettere nuωvamente aggiunte ne la lingua italiana'' ("Trissino's
epistle An epistle (; el, ἐπιστολή, ''epistolē,'' "letter") is a writing directed or sent to a person or group of people, usually an elegant and formal didactic letter. The epistle genre of letter-writing was common in ancient Egypt as par ...
about the letters recently added in the
Italian language Italian (''italiano'' or ) is a Romance language of the Indo-European language family that evolved from the Vulgar Latin of the Roman Empire. Together with Sardinian, Italian is the least divergent language from Latin. Spoken by about 8 ...
") of 1524. Originally, 'I' and 'J' were different shapes for the same letter, both equally representing , , and ; however,
Romance languages The Romance languages, sometimes referred to as Latin languages or Neo-Latin languages, are the various modern languages that evolved from Vulgar Latin. They are the only extant subgroup of the Italic languages in the Indo-European language ...
developed new sounds (from former and ) that came to be represented as 'I' and 'J'; therefore,
English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national ...
J, acquired from the
French French (french: français(e), link=no) may refer to: * Something of, from, or related to France ** French language, which originated in France, and its various dialects and accents ** French people, a nation and ethnic group identified with Franc ...
J, has a sound value quite different from (which represents the initial sound in the English language word "''y''et").


Pronunciation and use


English

In English, most commonly represents the
affricate An affricate is a consonant that begins as a stop and releases as a fricative, generally with the same place of articulation (most often coronal). It is often difficult to decide if a stop and fricative form a single phoneme or a consonant pai ...
. In
Old English Old English (, ), or Anglo-Saxon, is the earliest recorded form of the English language, spoken in England and southern and eastern Scotland in the early Middle Ages. It was brought to Great Britain by Anglo-Saxon settlers in the mid-5th ...
, the phoneme was represented orthographically with and . Under the influence of
Old French Old French (, , ; Modern French: ) was the language spoken in most of the northern half of France from approximately the 8th to the 14th centuries. Rather than a unified language, Old French was a linkage of Romance dialects, mutually intel ...
, which had a similar phoneme deriving from Latin , English scribes began to use (later ) to represent word-initial in Old English (for example, ''iest'' and, later ''jest''), while using elsewhere (for example, ''hedge''). Later, many other uses of (later ) were added in
loanword A loanword (also loan word or loan-word) is a word at least partly assimilated from one language (the donor language) into another language. This is in contrast to cognates, which are words in two or more languages that are similar because ...
s from French and other languages (e.g. ''adjoin'', ''junta''). The first
English language English is a West Germanic language of the Indo-European language family, with its earliest forms spoken by the inhabitants of early medieval England. It is named after the Angles, one of the ancient Germanic peoples that migrated to the ...
book to make a clear distinction between and was the
King James Bible The King James Version (KJV), also the King James Bible (KJB) and the Authorized Version, is an English translation of the Christian Bible for the Church of England, which was commissioned in 1604 and published in 1611, by sponsorship of ...
1st Revision Cambridge 1629 and an English grammar book published in 1633. In loan words such as ''bijou'' or ''
Dijon Dijon (, , ) (dated) * it, Digione * la, Diviō or * lmo, Digion is the prefecture of the Côte-d'Or department and of the Bourgogne-Franche-Comté region in northeastern France. the commune had a population of 156,920. The earlie ...
'', may represent . In some of these, including '' raj'', ''
Azerbaijan Azerbaijan (, ; az, Azərbaycan ), officially the Republic of Azerbaijan, , also sometimes officially called the Azerbaijan Republic is a transcontinental country located at the boundary of Eastern Europe and Western Asia. It is a part of th ...
'', ''
Taj Mahal The Taj Mahal (; ) is an Islamic ivory-white marble mausoleum on the right bank of the river Yamuna in the Indian city of Agra. It was commissioned in 1631 by the Mughal emperor Shah Jahan () to house the tomb of his favourite wife, ...
'', and ''
Beijing } Beijing ( ; ; ), Chinese postal romanization, alternatively romanized as Peking ( ), is the Capital city, capital of the China, People's Republic of China. It is the center of power and development of the country. Beijing is the world's Li ...
'', the regular pronunciation is actually closer to the native pronunciation, making the use of an instance of hyperforeignism, a type of
hypercorrection In sociolinguistics, hypercorrection is non-standard use of language that results from the over-application of a perceived rule of language-usage prescription. A speaker or writer who produces a hypercorrection generally believes through a mis ...
. Occasionally, represents the original sound, as in '' Hallelujah'' and ''
fjord In physical geography, a fjord or fiord () is a long, narrow inlet with steep sides or cliffs, created by a glacier. Fjords exist on the coasts of Alaska, Antarctica, British Columbia, Chile, Denmark, Germany, Greenland, the Faroe Islands, Icel ...
'' (see
Yodh Yodh (also spelled jodh, yod, or jod) is the tenth letter of the Semitic abjads, including Phoenician Yōd /𐤉, Hebrew Yōd , Aramaic Yod , Syriac Yōḏ ܝ, and Arabic . Its sound value is in all languages for which it is used; in many l ...
for details). In words of Spanish origin, where represents the
voiceless velar fricative The voiceless velar fricative is a type of consonantal sound used in some spoken languages. It was part of the consonant inventory of Old English and can still be found in some dialects of English, most notably in Scottish English, e.g. in ''loc ...
(such as ''jalapeño''), English speakers usually approximate with the
voiceless glottal fricative The voiceless glottal fricative, sometimes called voiceless glottal transition, and sometimes called the aspirate, is a type of sound used in some spoken languages that patterns like a fricative or approximant consonant '' phonologically'', bu ...
. In English, is the fourth least frequently used letter in words, being more frequent only than , , and . It is, however, quite common in proper nouns, especially personal names.


Other languages


Germanic and Eastern-European languages

The great majority of
Germanic languages The Germanic languages are a branch of the Indo-European language family spoken natively by a population of about 515 million people mainly in Europe, North America, Oceania and Southern Africa. The most widely spoken Germanic language, ...
, such as
German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ge ...
, Dutch, Icelandic, Swedish, Danish and Norwegian, use for the
palatal approximant The voiced palatal approximant, or yod, is a type of consonant used in many spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is . The equivalent X-SAMPA symbol is j, and in the Americanist phonetic n ...
, which is usually represented by the letter in English. Notable exceptions are
English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national ...
, Scots and (to a lesser degree)
Luxembourgish Luxembourgish ( ; also ''Luxemburgish'', ''Luxembourgian'', ''Letzebu(e)rgesch''; Luxembourgish: ) is a West Germanic language that is spoken mainly in Luxembourg. About 400,000 people speak Luxembourgish worldwide. As a standard form of th ...
. also represents in Albanian, and those
Uralic The Uralic languages (; sometimes called Uralian languages ) form a language family of 38 languages spoken by approximately 25million people, predominantly in Northern Eurasia. The Uralic languages with the most native speakers are Hungarian lan ...
, Slavic and
Baltic languages The Baltic languages are a branch of the Indo-European language family spoken natively by a population of about 4.5 million people mainly in areas extending east and southeast of the Baltic Sea in Northern Europe. Together with the Slavic lan ...
that use the Latin alphabet, such as Hungarian, Finnish,
Estonian Estonian may refer to: * Something of, from, or related to Estonia, a country in the Baltic region in northern Europe * Estonians, people from Estonia, or of Estonian descent * Estonian language * Estonian cuisine * Estonian culture See also * ...
, Polish, Czech,
Serbo-Croatian Serbo-Croatian () – also called Serbo-Croat (), Serbo-Croat-Bosnian (SCB), Bosnian-Croatian-Serbian (BCS), and Bosnian-Croatian-Montenegrin-Serbian (BCMS) – is a South Slavic language and the primary language of Serbia, Croatia, Bosnia an ...
, Slovak,
Slovenian Slovene or Slovenian may refer to: * Something of, from, or related to Slovenia, a country in Central Europe * Slovene language, a South Slavic language mainly spoken in Slovenia * Slovenes, an ethno-linguistic group mainly living in Slovenia * Sl ...
, Latvian and Lithuanian. Some related languages, such as Serbo-Croatian and
Macedonian Macedonian most often refers to someone or something from or related to Macedonia. Macedonian(s) may specifically refer to: People Modern * Macedonians (ethnic group), a nation and a South Slavic ethnic group primarily associated with North Ma ...
, also adopted into the Cyrillic alphabet for the same purpose. Because of this standard, the
lower case Letter case is the distinction between the letters that are in larger uppercase or capitals (or more formally ''majuscule'') and smaller lowercase (or more formally ''minuscule'') in the written representation of certain languages. The writing ...
letter was chosen to be used in the
IPA IPA commonly refers to: * India pale ale, a style of beer * International Phonetic Alphabet, a system of phonetic notation * Isopropyl alcohol, a chemical compound IPA may also refer to: Organizations International * Insolvency Practitioners A ...
as the phonetic symbol for the sound.


Romance languages

In the
Romance languages The Romance languages, sometimes referred to as Latin languages or Neo-Latin languages, are the various modern languages that evolved from Vulgar Latin. They are the only extant subgroup of the Italic languages in the Indo-European language ...
, has generally developed from its original palatal approximant value in
Latin Latin (, or , ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through ...
to some kind of
fricative A fricative is a consonant produced by forcing air through a narrow channel made by placing two articulators close together. These may be the lower lip against the upper teeth, in the case of ; the back of the tongue against the soft palate in ...
. In
French French (french: français(e), link=no) may refer to: * Something of, from, or related to France ** French language, which originated in France, and its various dialects and accents ** French people, a nation and ethnic group identified with Franc ...
, Portuguese,
Catalan Catalan may refer to: Catalonia From, or related to Catalonia: * Catalan language, a Romance language * Catalans, an ethnic group formed by the people from, or with origins in, Northern or southern Catalonia Places * 13178 Catalan, asteroid #1 ...
(except Valencian), and
Romanian Romanian may refer to: *anything of, from, or related to the country and nation of Romania ** Romanians, an ethnic group **Romanian language, a Romance language ***Romanian dialects, variants of the Romanian language **Romanian cuisine, traditiona ...
it has been fronted to the postalveolar fricative (like in English ''measure''). In Valencian and Occitan it has the same sound as in English, . In Spanish, by contrast, it has been both devoiced and backed from an earlier to a present-day or , with the actual phonetic realization depending on the speaker's dialect. Generally, ⟨j⟩ is not commonly present in modern standard Italian spelling. Only proper nouns (such as Jesi and
Letojanni Letojanni ( Sicilian: ''Letujanni'') is a '' comune'' (municipality), and coastal resort in the Province of Messina in the Italian region Sicily, located about east of Palermo and about southwest of Messina. Letojanni borders the following muni ...
),
Latin Latin (, or , ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through ...
words (
Juventus Juventus Football Club (from la, iuventūs, 'youth'; ), colloquially known as Juve (), is a professional football club based in Turin, Piedmont, Italy, that competes in the Serie A, the top tier of the Italian football league system. Founded in ...
), or those borrowed from foreign languages have . The proper nouns and Latin words are pronounced as the
palatal approximant The voiced palatal approximant, or yod, is a type of consonant used in many spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is . The equivalent X-SAMPA symbol is j, and in the Americanist phonetic n ...
, while words borrowed from foreign languages tend to follow that language's pronunciation of . Until the 19th century, was used instead of in
diphthong A diphthong ( ; , ), also known as a gliding vowel, is a combination of two adjacent vowel sounds within the same syllable. Technically, a diphthong is a vowel with two different targets: that is, the tongue (and/or other parts of the speech ...
s, as a replacement for final ''-ii'', and in vowel groups (as in ''Savoja''); this rule was quite strict in official writing. is also used to render in dialectal spelling, ''e.g.''
Romanesco dialect Romanesco () is one of the central Italian dialects spoken in the Metropolitan City of Rome Capital, especially in the core city. It is linguistically close to Tuscan and Standard Italian, with some notable differences from these two. Rich in ...
(garlic; cf. Italian ''aglio'' ). The Italian novelist
Luigi Pirandello Luigi Pirandello (; 28 June 1867 – 10 December 1936) was an Italian dramatist, novelist, poet, and short story writer whose greatest contributions were his plays. He was awarded the 1934 Nobel Prize in Literature for "his almost magical power ...
used in vowel groups in his works written in Italian; he also wrote in his native
Sicilian language Sicilian ( scn, sicilianu, link=no, ; it, siciliano) is a Romance language that is spoken on the island of Sicily and its satellite islands. A variant, ''Calabro-Sicilian'', is spoken in southern Calabria, where it is called Southern Calabr ...
, which still uses the letter to represent (and sometimes also ʒor j depending on its environment).


Other European Languages

The
Maltese language Maltese ( mt, Malti, links=no, also ''L-Ilsien Malti'' or '), is a Semitic language derived from late medieval Sicilian Arabic with Romance superstrata spoken by the Maltese people. It is the national language of Malta and the only offic ...
is a Semitic language, not a Romance language; but has been deeply influenced by them (especially Sicilian) and it uses for the sound /j/ (cognate of the Semitic ''yod''). In Basque, the diaphoneme represented by has a variety of realizations according to the regional dialect: (the last one is typical of
Gipuzkoa Gipuzkoa (, , ; es, Guipúzcoa ; french: Guipuscoa) is a province of Spain and a historical territory of the autonomous community of the Basque Country. Its capital city is Donostia-San Sebastián. Gipuzkoa shares borders with the French de ...
).


Non-European languages

Among non-European languages that have adopted the
Latin script The Latin script, also known as Roman script, is an alphabetic writing system based on the letters of the classical Latin alphabet, derived from a form of the Greek alphabet which was in use in the ancient Greek city of Cumae, in southern ...
, stands for in Turkish and
Azerbaijani Azerbaijani may refer to: * Something of, or related to Azerbaijan * Azerbaijanis * Azerbaijani language See also * Azerbaijan (disambiguation) * Azeri (disambiguation) * Azerbaijani cuisine * Culture of Azerbaijan The culture of Azerbaijan ...
, for in
Tatar The Tatars ()Tatar
in the Collins English Dictionary
is an umbrella term for different
. stands for in Indonesian,
Somali Somali may refer to: Horn of Africa * Somalis, an inhabitant or ethnicity associated with Greater Somali Region ** Proto-Somali, the ancestors of modern Somalis ** Somali culture ** Somali cuisine ** Somali language, a Cushitic language ** Somali ...
, Malay, Igbo, Shona, Oromo, Turkmen, and Zulu. It represents a voiced palatal plosive in Konkani,
Yoruba The Yoruba people (, , ) are a West African ethnic group that mainly inhabit parts of Nigeria, Benin, and Togo. The areas of these countries primarily inhabited by Yoruba are often collectively referred to as Yorubaland. The Yoruba constitute ...
, and Swahili. In
Kiowa Kiowa () people are a Native American tribe and an indigenous people of the Great Plains of the United States. They migrated southward from western Montana into the Rocky Mountains in Colorado in the 17th and 18th centuries,Pritzker 326 and e ...
, stands for a voiceless alveolar plosive, . stands for in the romanization systems of most of the
Languages of India Languages spoken in India belong to several language families, the major ones being the Indo-European languages spoken by 78.05% of Indians and the Dravidian languages spoken by 19.64% of Indians, both families together are sometimes know ...
such as
Hindi Hindi (Devanāgarī: or , ), or more precisely Modern Standard Hindi (Devanagari: ), is an Indo-Aryan language spoken chiefly in the Hindi Belt region encompassing parts of northern, central, eastern, and western India. Hindi has been ...
and
Telugu Telugu may refer to: * Telugu language, a major Dravidian language of India *Telugu people, an ethno-linguistic group of India * Telugu script, used to write the Telugu language ** Telugu (Unicode block), a block of Telugu characters in Unicode ...
and stands for in the Romanization of Japanese and Korean. For
Chinese language Chinese (, especially when referring to written Chinese) is a group of languages spoken natively by the ethnic Han Chinese majority and many minority ethnic groups in Greater China. About 1.3 billion people (or approximately 16% of the ...
s, stands for in
Mandarin Chinese Mandarin (; ) is a group of Chinese (Sinitic) dialects that are natively spoken across most of northern and southwestern China. The group includes the Beijing dialect, the basis of the phonology of Standard Chinese, the official language ...
Pinyin Hanyu Pinyin (), often shortened to just pinyin, is the official romanization system for Standard Mandarin Chinese in China, and to some extent, in Singapore and Malaysia. It is often used to teach Mandarin, normally written in Chinese fo ...
system, the unaspirated equivalent of (). In
Wade–Giles Wade–Giles () is a romanization system for Mandarin Chinese. It developed from a system produced by Thomas Francis Wade, during the mid-19th century, and was given completed form with Herbert A. Giles's '' Chinese–English Dictionary'' o ...
, stands for Mandarin Chinese .
Pe̍h-ōe-jī (; ; ), also sometimes known as the Church Romanization, is an orthography used to write variants of Southern Min Chinese, particularly Taiwanese and Amoy Hokkien. Developed by Western missionaries working among the Chinese diaspora in Sout ...
of
Hokkien The Hokkien () variety of Chinese is a Southern Min language native to and originating from the Minnan region, where it is widely spoken in the south-eastern part of Fujian in southeastern mainland China. It is one of the national languages ...
and Tâi-lô for
Taiwanese Hokkien Taiwanese Hokkien () (; Tâi-lô: ''Tâi-uân-uē''), also known as Taigi/Taigu (; Pe̍h-ōe-jī/ Tâi-lô: ''Tâi-gí / Tâi-gú''), Taiwanese, Taiwanese Minnan, Hoklo and Holo, is a variety of the Hokkien language spoken natively by about ...
, stands for and , or and , depending on accents. In
Jyutping Jyutping is a romanisation system for Cantonese developed by the Linguistic Society of Hong Kong (LSHK), an academic group, in 1993. Its formal name is the Linguistic Society of Hong Kong Cantonese Romanization Scheme. The LSHK advocates fo ...
for
Cantonese Cantonese ( zh, t=廣東話, s=广东话, first=t, cy=Gwóngdūng wá) is a language within the Chinese (Sinitic) branch of the Sino-Tibetan languages originating from the city of Guangzhou (historically known as Canton) and its surrounding a ...
, stands for . The Royal Thai General System of Transcription does not use the letter , although it is used in some proper names and non-standard transcriptions to represent either or (the latter following Pali/Sanskrit root equivalents). In romanized
Pashto Pashto (,; , ) is an Eastern Iranian language in the Indo-European language family. It is known in historical Persian literature as Afghani (). Spoken as a native language mostly by ethnic Pashtuns, it is one of the two official langua ...
, represents ځ, pronounced . In Greenlandic and in the ''Qaniujaaqpait'' spelling of the
Inuktitut Inuktitut (; , syllabics ; from , "person" + , "like", "in the manner of"), also Eastern Canadian Inuktitut, is one of the principal Inuit languages of Canada. It is spoken in all areas north of the tree line, including parts of the provinces o ...
language, is used to transcribe . Following Spanish usage, represents or similar sounds in many Latin-alphabet-based writing systems for
indigenous languages of the Americas Over a thousand indigenous languages are spoken by the Indigenous peoples of the Americas. These languages cannot all be demonstrated to be related to each other and are classified into a hundred or so language families (including a large nu ...
, such as in
Mayan languages The Mayan languagesIn linguistics, it is conventional to use ''Mayan'' when referring to the languages, or an aspect of a language. In other academic fields, ''Maya'' is the preferred usage, serving as both a singular and plural noun, and as ...
( ALMG alphabet) and a glottal fricative in some spelling systems used for Aymara.


Related characters

* 𐤉 : Semitic letter
Yodh Yodh (also spelled jodh, yod, or jod) is the tenth letter of the Semitic abjads, including Phoenician Yōd /𐤉, Hebrew Yōd , Aramaic Yod , Syriac Yōḏ ܝ, and Arabic . Its sound value is in all languages for which it is used; in many l ...
, from which the following symbols originally derive * I i : Latin letter I, from which J derives * ȷ : Dotless j * ᶡ : Modifier letter small dotless j with stroke * ᶨ : Modifier letter small j with crossed-tail *
IPA IPA commonly refers to: * India pale ale, a style of beer * International Phonetic Alphabet, a system of phonetic notation * Isopropyl alcohol, a chemical compound IPA may also refer to: Organizations International * Insolvency Practitioners A ...
-specific symbols related to J: *
Uralic Phonetic Alphabet The Uralic Phonetic Alphabet (UPA) or Finno-Ugric transcription system is a phonetic transcription or notational system used predominantly for the transcription and reconstruction of Uralic languages. It was first published in 1901 by Eemil Nes ...
-specific symbols related to J: ** ** ** * J with
diacritic A diacritic (also diacritical mark, diacritical point, diacritical sign, or accent) is a glyph added to a letter or to a basic glyph. The term derives from the Ancient Greek (, "distinguishing"), from (, "to distinguish"). The word ''diacrit ...
s: Ĵ ĵ J̌ ǰ Ɉ ɉ J̃ j̇̃


Computing codes

:1 Also for encodings based on ASCII, including the DOS, Windows, ISO-8859 and Macintosh families of encodings. Unicode also has a dotless variant, ȷ (U+0237). It is primarily used in Landsmålsalfabet and in mathematics. It is not intended to be used with diacritics since the normal j is softdotted in Unicode (that is, the dot is removed if a diacritic is to be placed above; Unicode further states that, for example i+ ¨ ≠ ı+¨ and the same holds true for j and ȷ). In Unicode, a duplicate of 'J' for use as a special phonetic character in historical Greek linguistics is encoded in the Greek script block as ϳ (Unicode U+03F3). It is used to denote the
palatal glide The voiced palatal approximant, or yod, is a type of consonant used in many spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is . The equivalent X-SAMPA symbol is j, and in the Americanist phonetic ...
in the context of Greek script. It is called "Yot" in the Unicode standard, after the German name of the letter J. An uppercase version of this letter was added to the Unicode Standard at U+037F with the release of version 7.0 in June 2014.


Wingdings smiley issue

In the
Wingdings Wingdings is a series of dingbat fonts that render letters as a variety of symbols. They were originally developed in 1990 by Microsoft by combining glyphs from Lucida Icons, Arrows, and Stars licensed from Charles Bigelow and Kris Holmes. Ce ...
font by
Microsoft Microsoft Corporation is an American multinational technology corporation producing computer software, consumer electronics, personal computers, and related services headquartered at the Microsoft Redmond campus located in Redmond, Washi ...
, the letter "J" is rendered as a
smiley face A smiley, sometimes referred to as a smiley face, is a basic ideogram that represents a smiling face. Since the 1950s it has become part of popular culture worldwide, used either as a standalone ideogram, or as a form of communication, such a ...
(this is distinct from the Unicode code point U+263A, which renders as ☺︎). In Microsoft applications, ":)" is automatically replaced by a smiley rendered in a specific font face when composing rich text documents or HTML email. This autocorrection feature can be switched off or changed to a Unicode smiley.


Other uses

* In international licence plate codes, J stands for
Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the n ...
. * In
mathematics Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics ...
, ''j'' is one of the three imaginary units of
quaternion In mathematics, the quaternion number system extends the complex numbers. Quaternions were first described by the Irish mathematician William Rowan Hamilton in 1843 and applied to mechanics in three-dimensional space. Hamilton defined a quater ...
s. * Also in
mathematics Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics ...
, ''j'' is one of the three unit vectors. * In the
Metric system The metric system is a system of measurement that succeeded the decimalised system based on the metre that had been introduced in France in the 1790s. The historical development of these systems culminated in the definition of the Intern ...
, J is the symbol for the
joule The joule ( , ; symbol: J) is the unit of energy in the International System of Units (SI). It is equal to the amount of work done when a force of 1 newton displaces a mass through a distance of 1 metre in the direction of the force appli ...
, the
SI derived unit SI derived units are units of measurement derived from the seven base units specified by the International System of Units (SI). They can be expressed as a product (or ratio) of one or more of the base units, possibly scaled by an appropriate p ...
for
energy In physics, energy (from Ancient Greek: ἐνέργεια, ''enérgeia'', “activity”) is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of ...
. * In some areas of
physics Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which ...
,
electrical engineering Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems which use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the l ...
and related fields, ''j'' is the symbol for the
imaginary unit The imaginary unit or unit imaginary number () is a solution to the quadratic equation x^2+1=0. Although there is no real number with this property, can be used to extend the real numbers to what are called complex numbers, using addition an ...
(the square root of −1) (in other fields the letter i is used, but this would be ambiguous as it is also the symbol for current). * A J can be a
slang Slang is vocabulary (words, phrases, and linguistic usages) of an informal register, common in spoken conversation but avoided in formal writing. It also sometimes refers to the language generally exclusive to the members of particular in-gr ...
term for a
joint A joint or articulation (or articular surface) is the connection made between bones, ossicles, or other hard structures in the body which link an animal's skeletal system into a functional whole.Saladin, Ken. Anatomy & Physiology. 7th ed. McGraw- ...
(
marijuana Cannabis, also known as marijuana among other names, is a psychoactive drug from the cannabis plant. Native to Central or South Asia, the cannabis plant has been used as a drug for both recreational and entheogenic purposes and in various t ...
cigarette) *In the
United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and ...
under the old system (before 2001), a licence plate that begins with "J" for example "J123 XYZ" would correspond to a vehicle registered between August 1, 1991 and July 31, 1992. Again under the old system, a licence plate that ends with "J" for example "ABC 123J" would correspond to a vehicle that was registered between August 1, 1970 and July 31, 1971.


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* * * {{Latin script, J} ISO basic Latin letters