Letter (alphabet)
Encyclopedia
A letter is a grapheme in an alphabet
Alphabet
An alphabet is a standard set of letters—basic written symbols or graphemes—each of which represents a phoneme in a spoken language, either as it exists now or as it was in the past. There are other systems, such as logographies, in which each character represents a word, morpheme, or semantic...

ic system of writing
Writing
Writing is the representation of language in a textual medium through the use of a set of signs or symbols . It is distinguished from illustration, such as cave drawing and painting, and non-symbolic preservation of language via non-textual media, such as magnetic tape audio.Writing most likely...

, such as the Greek alphabet
Greek alphabet
The Greek alphabet is the script that has been used to write the Greek language since at least 730 BC . The alphabet in its classical and modern form consists of 24 letters ordered in sequence from alpha to omega...

 and its descendants. Letters compose phonemes and each phoneme represents a phone (sound) in the spoken form of the language
Spoken language
Spoken language is a form of human communication in which words derived from a large vocabulary together with a diverse variety of names are uttered through or with the mouth. All words are made up from a limited set of vowels and consonants. The spoken words they make are stringed into...

.

Written signs in other writing systems are best called syllabograms (which denote a syllable
Syllable
A syllable is a unit of organization for a sequence of speech sounds. For example, the word water is composed of two syllables: wa and ter. A syllable is typically made up of a syllable nucleus with optional initial and final margins .Syllables are often considered the phonological "building...

) or logogram
Logogram
A logogram, or logograph, is a grapheme which represents a word or a morpheme . This stands in contrast to phonograms, which represent phonemes or combinations of phonemes, and determinatives, which mark semantic categories.Logograms are often commonly known also as "ideograms"...

s (which denote a word or phrase).

Definition and usage

The term letter, borrowed from Old French
Old French
Old French was the Romance dialect continuum spoken in territories that span roughly the northern half of modern France and parts of modern Belgium and Switzerland from the 9th century to the 14th century...

 lettre, entered Middle English
Middle English
Middle English is the stage in the history of the English language during the High and Late Middle Ages, or roughly during the four centuries between the late 11th and the late 15th century....

 around AD 1200, eventually displacing the native English term bocstaf (i.e. bookstaff). Letter derives ultimately from Latin littera, itself of unknown origin. The Middle English plural lettres could refer to an epistle or written document, reflecting the use of the Latin plural litteræ. Use of the singular letter to refer to a written document emerges in the 14th century.

As symbols that denote segmental speech, letters are associated with phonetics
Phonetics
Phonetics is a branch of linguistics that comprises the study of the sounds of human speech, or—in the case of sign languages—the equivalent aspects of sign. It is concerned with the physical properties of speech sounds or signs : their physiological production, acoustic properties, auditory...

. In a purely phonemic alphabet, a single phoneme is denoted by a single letter, but in history and practice letters often denote more than one phoneme. A pair of letters designating a single phoneme is called a digraph
Digraph (orthography)
A digraph or digram is 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...

. Examples of digraphs in English include "ch", "sh" and "th". A phoneme can also be represented by three letters, called a trigraph
Trigraph (orthography)
A trigraph is a group of three letters used to represent a single sound or a combination of sounds that does not correspond to the written letters combined. For example, in the word schilling, the trigraph sch represents the voiceless postalveolar fricative , rather than the consonant cluster...

. An example is the combination "sch" in German.

A letter may also be associated with more than one phoneme, with the phoneme depending on the surrounding letters or etymology of the word. As an example of positional effects, the Spanish letter c is pronounced [k] before a, o, or u (e.g. cantar, corto, cuidado), but is pronounced [θ] before e or i (e.g. centimo, ciudad).

Letters also have specific names associated with them. These names may differ with language, dialect and history. Z
Z
Z is the twenty-sixth and final letter of the basic modern Latin alphabet.-Name and pronunciation:In most dialects of English, the letter's name is zed , reflecting its derivation from the Greek zeta but in American English, its name is zee , deriving from a late 17th century English dialectal...

, for example, is usually called zed in all English-speaking countries except the U.S., where it is named zee.

Letters, as elements of alphabets, have prescribed orders. This may generally be known as "alphabetical order" though collation
Collation
Collation is the assembly of written information into a standard order. One common type of collation is called alphabetization, though collation is not limited to ordering letters of the alphabet...

 is the science devoted to the complex task of ordering and sorting of letters and words in different languages. In Spanish, for instance, ñ
Ñ
Ñ is a letter of the modern Latin alphabet, formed by an N with a diacritical tilde. It is used in the Spanish alphabet, Galician alphabet, Asturian alphabet, Basque alphabet, Aragonese old alphabet , Filipino alphabet, Chamorro alphabet and the Guarani alphabet, where it represents...

 is a separate letter being sorted after n. In English, n and ñ are sorted alike.

Letters may also have numerical value. This is true of Roman numerals
Roman numerals
The numeral system of ancient Rome, or Roman numerals, uses combinations of letters from the Latin alphabet to signify values. The numbers 1 to 10 can be expressed in Roman numerals as:...

 and the letters of other writing systems. In English, Arabic numerals
Arabic numerals
Arabic numerals or Hindu numerals or Hindu-Arabic numerals or Indo-Arabic numerals are the ten digits . They are descended from the Hindu-Arabic numeral system developed by Indian mathematicians, in which a sequence of digits such as "975" is read as a numeral...

 are typically used instead of letters.

Letters may be used as words. The words a (lower or uppercase) and I (always uppercase) are the most common English letter-words. Sometimes O is used for "Oh" in poetic situations. In extremely informal cases of writing, individual letters may replace words, e.g. U may be used instead of "You" in English, when the letter is pronounced as a homophone
Homophone
A homophone is a word that is pronounced the same as another word but differs in meaning. The words may be spelled the same, such as rose and rose , or differently, such as carat, caret, and carrot, or to, two, and too. Homophones that are spelled the same are also both homographs and homonyms...

 of the word.

People and objects are sometimes named after letters, for one of these reasons:
  1. The letter is an abbreviation, e.g. "G-man" as slang for a Federal Bureau of Investigation
    Federal Bureau of Investigation
    The Federal Bureau of Investigation is an agency of the United States Department of Justice that serves as both a federal criminal investigative body and an internal intelligence agency . The FBI has investigative jurisdiction over violations of more than 200 categories of federal crime...

     agent, arose as short for "Government Man".
  2. Alphabetical order used as a counting system, e.g. Plan A, Plan B, etc.; alpha ray, beta ray, gamma ray
    Gamma ray
    Gamma radiation, also known as gamma rays or hyphenated as gamma-rays and denoted as γ, is electromagnetic radiation of high frequency . Gamma rays are usually naturally produced on Earth by decay of high energy states in atomic nuclei...

    , delta ray
    Delta ray
    A delta ray is sometimes used to describe any recoil particle caused by secondary ionization. The term was coined by J.J. Thomson. It is entirely unrelated to the family of subatomic particles named delta baryon.-Characteristics:...

    , epsilon ray
  3. The shape of the letter, e.g. D-ring
    D-ring
    A D-ring is an item of hardware, usually a metal ring shaped like the letter D. It may be used at the end of a leather or fabric strap, or may be secured to a surface with a metal or fabric strap...

    , F-clamp
    F-clamp
    An F-clamp, also known as a bar clamp or speed clamp and a "G-clamp", is a type of clamp. The name comes from its "F" shape. The F-clamp is similar to a C-clamp in use, but has a wider opening capacity...

    , G-clamp, H-block
    Maze (HM Prison)
    Her Majesty's Prison Maze was a prison in Northern Ireland that was used to house paramilitary prisoners during the Troubles from mid-1971 to mid-2000....

    , H engine
    H engine
    An H engine is an engine configuration in which the cylinders are aligned so that if viewed from the front, they appear to be in a vertical or horizontal letter H....

    , O-ring
    O-ring
    An O-ring, also known as a packing, or a toric joint, is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a disc-shaped cross-section, designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface.The O-ring...

    , R-clip
    R-clip
    An R-clip, also known as an R-pin, R-key, hairpin cotter pin, hairpin cotter, bridge pin, hitch pin or spring cotter pin, is a fastener made of a springy material, commonly hardened metal wire, resembling the shape of the letter "R".R-clips are commonly used to secure the ends of round shafts such...

    , U engine
    U engine
    A U engine is a piston engine made up of two separate straight engines joined by gears or chains. It is similar to the H engine which couples two flat engines...

    , V engine
    V engine
    A V engine, or Vee engine is a common configuration for an internal combustion engine. The cylinders and pistons are aligned, in two separate planes or 'banks', so that they appear to be in a "V" when viewed along the axis of the crankshaft...

    , Z-drive
    Z-drive
    A Z-drive is a type of marine propulsion unit. Specifically, it is an azimuth thruster. The pod can rotate 360 degrees allowing for rapid changes in thrust direction and thus vessel direction...

    , a river delta
    River delta
    A delta is a landform that is formed at the mouth of a river where that river flows into an ocean, sea, estuary, lake, reservoir, flat arid area, or another river. Deltas are formed from the deposition of the sediment carried by the river as the flow leaves the mouth of the river...

  4. Other reasons, e.g. X-ray
    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...

     after "x the unknown" in algebra
    Algebra
    Algebra is the branch of mathematics concerning the study of the rules of operations and relations, and the constructions and concepts arising from them, including terms, polynomials, equations and algebraic structures...

    , because the discoverer did not know what they were.

A Classical definition

Guilhem Molinier, a member of the Consistori del Gay Saber
Consistori del Gay Saber
The Consistori del Gay Saber , commonly called the Consistori de Tolosa today, was a poetic academy founded at Toulouse in 1323 to revive and perpetuate the lyric school of the troubadours.-Foundation:...

, which was the first literary academy in the world and held the Floral Games
Floral Games
Floral Games were any of a series historically related poetry contests with floral prizes. In Occitan, their original language, and Catalan they are known as Jocs florals . In French they became the Jeux floraux...

 to award the best troubadour
Troubadour
A troubadour was a composer and performer of Old Occitan lyric poetry during the High Middle Ages . Since the word "troubadour" is etymologically masculine, a female troubadour is usually called a trobairitz....

 with the violeta d'aur top prize, gave a definition of the letter in his Leys d'amor (1328–1337), a book aimed at regulating the then flourishing Occitan poetry:

Letra votz no es devisabla.

E per escriure convenabla.

Letra per miels esser exposta.

Es menor part de votz composta.
|
A letter is an indivisible sound

That is fit for writing;

A letter, to define it better,

Is the smallest part of a composite sound.

History

The first consonantal alphabet found has emerged around 2000 BCE to represent the language 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...

 workers in Egypt (see Middle Bronze Age alphabets
Middle Bronze Age alphabets
Proto-Sinaitic is a Middle Bronze Age script attested in a very small collection of inscriptions at Serabit el-Khadim in the Sinai Peninsula. Due to the extreme scarcity of Proto-Sinaitic signs, very little is known with certainty about the nature of the script...

), and was derived from the alphabetic principles of the Egyptian hieroglyphs
Egyptian hieroglyphs
Egyptian hieroglyphs were a formal writing system used by the ancient Egyptians that combined logographic and alphabetic elements. Egyptians used cursive hieroglyphs for religious literature on papyrus and wood...

. Nearly all alphabets in the world today either descend directly from this development or were inspired by its design. The Greek alphabet
Greek alphabet
The Greek alphabet is the script that has been used to write the Greek language since at least 730 BC . The alphabet in its classical and modern form consists of 24 letters ordered in sequence from alpha to omega...

, invented around 800 BC
9th century BC
The 9th century BC started the first day of 900 BC and ended the last day of 801 BC.- Overview :The 9th century BC was a period of great changes in civilizations. In Africa, Carthage is founded by the Phoenicians...

, was the first alphabet assigning letters not only to consonant
Consonant
In articulatory phonetics, a consonant is a speech sound that is articulated with complete or partial closure of the vocal tract. Examples are , pronounced with the lips; , pronounced with the front of the tongue; , pronounced with the back of the tongue; , pronounced in the throat; and ,...

s, but also to vowel
Vowel
In phonetics, a vowel is a sound in spoken language, such as English ah! or oh! , pronounced with an open vocal tract so that there is no build-up of air pressure at any point above the glottis. This contrasts with consonants, such as English sh! , where there is a constriction or closure at some...

s.

Various scripts

The following alphabets, abjads (alphabets with consonants only) and individual letters are discussed in related articles. Each represents a different script:

Arabic alphabet
Arabic alphabet
The Arabic alphabet or Arabic abjad is the Arabic script as it is codified for writing the Arabic language. It is written from right to left, in a cursive style, and includes 28 letters. Because letters usually stand for consonants, it is classified as an abjad.-Consonants:The Arabic alphabet has...

: (Alphabetical from right to left) , , , , , , , , , , , , , , , , , , , , , , , , , , , .

Syriac alphabet
Syriac alphabet
The Syriac alphabet is a writing system primarily used to write the Syriac language from around the 2nd century BC . It is one of the Semitic abjads directly descending from the Aramaic alphabet and shares similarities with the Phoenician, Hebrew, Arabic, and the traditional Mongolian alphabets.-...

: (Alphabetical from right to left) ܐ
Aleph (letter)
' is the reconstructed name of the first letter of the Proto-Canaanite alphabet, continued in descended Semitic alphabets as Phoenician ' , Syriac ' , Hebrew Aleph , and Arabic ' ....

, ܒ
Bet (letter)
Bet, Beth, Beh, or Vet is the second letter of many Semitic abjads, including Arabic alphabet , Aramaic, Hebrew , Phoenician and Syriac...

, ܓ
Gimel (letter)
Gimel is the third letter of many Semitic alphabets, including Phoenician, Aramaic, Hebrew , Syriac and Arabic...

, ܕ, ܗ
He (letter)
He is the fifth letter of many Semitic alphabets, including Phoenician , Aramaic, Hebrew , Syriac and Arabic . Its sound value is a voiceless glottal fricative ....

, ܘ
Waw (letter)
Waw is the sixth letter of the Northwest Semitic family of scripts, including Phoenician, Aramaic, Hebrew, Syriac, and Arabic ....

, ܙ, ܚ
Heth (letter)
' or ' is the reconstructed name of the eighth letter of the Proto-Canaanite alphabet, continued in descended Semitic alphabets as Phoenician , Syriac , Hebrew ḥēth , Arabic , and Berber .Heth originally represented a voiceless fricative, either pharyngeal , or...

, ܛ, ܝ, ܟܟ, ܠ, ܡܡ, ܢܢ
Nun (letter)
Nun is the fourteenth letter of many Semitic abjads, including Phoenician, Aramaic, Hebrew and Arabic alphabet . It is the third letter in Thaana , pronounced as "noonu"...

, ܣ
Samekh
Samekh or Simketh is the fifteenth letter in many Semitic alphabets, including Phoenician, Hebrew, and Aramaic, representing . The Arabic alphabet, however, uses a letter based on Phoenician šin to represent ; however, that glyph takes Samekh's place in the traditional Abjadi order of the Arabic...

, ܥ, ܦ
Pe (letter)
Pe is the seventeenth letter in many Semitic abjads, including Phoenician, Aramaic, Hebrew Pei and Persian, Arabic ....

, ܨ, ܩ
Qoph
Qoph or Qop is the nineteenth letter in many Semitic abjads, including Phoenician, Aramaic, Syriac, Hebrew and Arabic alphabet . Its sound value is an emphatic or . The OHED gives the letter Qoph a transliteration value of Q or a K and a final transliteration value as a ck...

, ܪ, ܫ
Shin (letter)
Shin literally means "Sharp" ; It is the twenty-first letter in many Semitic abjads, including Phoenician , Aramaic/Hebrew , and Arabic ....

, ܬ
Taw (letter)
Taw, Tav or Taf is the twenty-second and last letter in many Semitic abjads, including Phoenician, Aramaic, Hebrew Taw and Arabic alphabet .Its original sound value is ....

.

Cyrillic alphabet
Cyrillic alphabet
The Cyrillic script or azbuka is an alphabetic writing system developed in the First Bulgarian Empire during the 10th century AD at the Preslav Literary School...

: А, Б, В, Г, Ґ, Д, Е, Є, Ж, З, И, І, Ї, Й, К, Л, М, Н, О, П, Р, С, Т, У, Ф, Х, Ц, Ч, Ш, Щ, Ю, Я, Ъ, Ь, Ђ, Љ, Њ, Ћ, Џ, Ы.

Greek alphabet
Greek alphabet
The Greek alphabet is the script that has been used to write the Greek language since at least 730 BC . The alphabet in its classical and modern form consists of 24 letters ordered in sequence from alpha to omega...

: Α
Alpha (letter)
Alpha is the first letter of the Greek alphabet. In the system of Greek numerals it has a value of 1. It was derived from the Phoenician letter Aleph...

, Β
Beta (letter)
Beta is the second letter of the Greek alphabet. In Ancient Greek, beta represented the voiced bilabial plosive . In Modern Greek, it represents the voiced labiodental fricative ....

, Γ
Gamma
Gamma is the third letter of the Greek alphabet. In the system of Greek numerals it has a value of 3. It was derived from the Phoenician letter Gimel . Letters that arose from Gamma include the Roman C and G and the Cyrillic letters Ge Г and Ghe Ґ.-Greek:In Ancient Greek, gamma represented a...

, Δ
Delta (letter)
Delta is the fourth letter of the Greek alphabet. In the system of Greek numerals it has a value of 4. It was derived from the Phoenician letter Dalet...

, Ε
Epsilon
Epsilon is the fifth letter of the Greek alphabet, corresponding phonetically to a close-mid front unrounded vowel . In the system of Greek numerals it has a value of 5. It was derived from the Phoenician letter He...

, Ζ
Zeta (letter)
Zeta is the sixth letter of the Greek alphabet. In the system of Greek numerals, it has a value of 7. It was derived from the Phoenician letter Zayin...

, Η
Eta (letter)
Eta ) is the seventh letter of the Greek alphabet. Originally denoting a consonant /h/, its sound value in the classical Attic dialect of Ancient Greek was a long vowel , raised to in medieval Greek, a process known as itacism.In the system of Greek numerals it has a value of 8...

, Θ
Theta
Theta is the eighth letter of the Greek alphabet, derived from the Phoenician letter Teth...

, Ι
Iota
Iota is the ninth letter of the Greek alphabet. In the system of Greek numerals it has a value of 10. It was derived from the Phoenician letter Yodh . Letters that arose from this letter include the Roman I and J and the Cyrillic І , Yi , Je , and iotified letters .Iota represents...

, Κ, Λ
Lambda
Lambda is the 11th letter of the Greek alphabet. In the system of Greek numerals lambda has a value of 30. Lambda is related to the Phoenician letter Lamed . Letters in other alphabets that stemmed from lambda include the Roman L and the Cyrillic letter El...

, Μ
Mu (letter)
Carlos Alberto Vives Restrepo is a Grammy Award and three-time Latin Grammy Award winning-Colombian singer, composer and actor.-Biography:...

, Ν
Nu (letter)
Nu , is the 13th letter of the Greek alphabet. In the system of Greek numerals it has a value of 50...

, Ξ, Ο
Omicron
Omicron is the 15th letter of the Greek alphabet. In the system of Greek numerals it has a value of 70. It is rarely used in mathematics because it is indistinguishable from the Latin letter O and easily confused with the digit 0...

, Π
Pi (letter)
Pi is the sixteenth letter of the Greek alphabet, representing . In the system of Greek numerals it has a value of 80. Letters that arose from pi include Cyrillic Pe , Coptic pi , and Gothic pairthra .The upper-case letter Π is used as a symbol for:...

, Ρ
Rho (letter)
Rho is the 17th letter of the Greek alphabet. In the system of Greek numerals, it has a value of 100. It is derived from Semitic resh "head"...

, Σ, Τ
Tau
Tau is the 19th letter of the Greek alphabet. In the system of Greek numerals it has a value of 300.The name in English is pronounced , but in modern Greek it is...

, Υ
Upsilon
Upsilon is the 20th letter of the Greek alphabet.  In the system of Greek numerals it has a value of 400. It is derived from the Phoenician waw. The name of the letter is pronounced in Modern Greek, and in English , , or...

, Φ
Phi
Phi may refer to:In language:*Phi, the Greek letter Φ,φ, the symbol for voiceless bilabial fricativeIn mathematics:*The Golden ratio*Euler's totient function*A statistical measure of association reported with the chi-squared test...

, Χ
Chi (letter)
Chi is the 22nd letter of the Greek alphabet, pronounced as in English.-Greek:-Ancient Greek:Its value in Ancient Greek was an aspirated velar stop .-Koine Greek:...

, Ψ
Psi (letter)
Psi is the 23rd letter of the Greek alphabet and has a numeric value of 700. In both Classical and Modern Greek, the letter indicates the combination /ps/ . The letter was adopted into the Old Italic alphabet, and its shape is continued into the Algiz rune of the Elder Futhark...

, Ω
Omega
Omega is the 24th and last letter of the Greek alphabet. In the Greek numeric system, it has a value of 800. The word literally means "great O" , as opposed to omicron, which means "little O"...

.

Hebrew alphabet
Hebrew alphabet
The Hebrew alphabet , known variously by scholars as the Jewish script, square script, block script, or more historically, the Assyrian script, is used in the writing of the Hebrew language, as well as other Jewish languages, most notably Yiddish, Ladino, and Judeo-Arabic. There have been two...

: (Alphabetical from right to left) א
Aleph (letter)
' is the reconstructed name of the first letter of the Proto-Canaanite alphabet, continued in descended Semitic alphabets as Phoenician ' , Syriac ' , Hebrew Aleph , and Arabic ' ....

, ב, ג
Gimel (letter)
Gimel is the third letter of many Semitic alphabets, including Phoenician, Aramaic, Hebrew , Syriac and Arabic...

, ד
Dalet
Dalet is the fourth letter of many Semitic alphabets, including Phoenician, Aramaic, Hebrew , Syriac and Arabic...

, ה
He (letter)
He is the fifth letter of many Semitic alphabets, including Phoenician , Aramaic, Hebrew , Syriac and Arabic . Its sound value is a voiceless glottal fricative ....

, ו
Waw (letter)
Waw is the sixth letter of the Northwest Semitic family of scripts, including Phoenician, Aramaic, Hebrew, Syriac, and Arabic ....

, ז
Zayin
Zayin is the seventh letter of many Semitic abjads, including Phoenician , Aramaic , Hebrew , Syriac and Perso-Arabic alphabet...

, ח
Heth
-People:* Children of Heth, a Canaanite nation in the Hebrew Bible, purportedly named after Heth, son of Canaan, son of Ham, son of Noah* figures in the Book of Mormon:** Heth , an early Jaredite** Heth a later Jaredite...

, ט
Teth
' is the ninth letter of many Semitic abjads , including Phoenician, Aramaic, Hebrew Tet , Syriac and Arabic ; it is 9th in abjadi order and 16th in modern Arabic order....

, י
Yodh
Yodh is the tenth letter of many Semitic alphabets, including Phoenician, Aramaic, Hebrew Yud , Syriac and Arabic...

, כ
Kaph
Kaph is the eleventh letter of many Semitic abjads, including Phoenician, Aramaic, Hebrew Kaf , Arabic alphabet , Persian alphabet...

, ל
Lamedh
Lamed or Lamedh is the twelfth letter in many Semitic abjads, including Phoenician, Aramaic, Hebrew Lamed and Arabic alphabet . Its sound value is .The Phoenician letter gave rise to the Greek Lambda , Latin L, and Cyrillic Л.-Origins:...

, מ
Mem
Mem is the thirteenth letter of many Semitic abjads, including Phoenician, Aramaic, Hebrew and Arabic...

, נ
Nun (letter)
Nun is the fourteenth letter of many Semitic abjads, including Phoenician, Aramaic, Hebrew and Arabic alphabet . It is the third letter in Thaana , pronounced as "noonu"...

, ס
Samekh
Samekh or Simketh is the fifteenth letter in many Semitic alphabets, including Phoenician, Hebrew, and Aramaic, representing . The Arabic alphabet, however, uses a letter based on Phoenician šin to represent ; however, that glyph takes Samekh's place in the traditional Abjadi order of the Arabic...

, ע
Ayin
' or ' is the sixteenth letter in many Semitic abjads, including Phoenician, Aramaic, Hebrew and Arabic . It is the twenty-first letter in the new Persian alphabet...

, פ
Pe (letter)
Pe is the seventeenth letter in many Semitic abjads, including Phoenician, Aramaic, Hebrew Pei and Persian, Arabic ....

, צ
Tsade
' is the eighteenth letter in many Semitic alphabets, including Phoenician, Aramaic, Hebrew ' and Arabic ' . Its oldest sound value is probably , although there is a variety of pronunciation in different modern Semitic languages and their dialects...

, ק
Qoph
Qoph or Qop is the nineteenth letter in many Semitic abjads, including Phoenician, Aramaic, Syriac, Hebrew and Arabic alphabet . Its sound value is an emphatic or . The OHED gives the letter Qoph a transliteration value of Q or a K and a final transliteration value as a ck...

, ר
Resh
Resh is the twentieth letter of many Semitic alphabets, including Phoenician, Aramaic, Hebrew and Arabic alphabet . Its sound value is one of a number of rhotic consonants: usually or , but also or in Hebrew....

, ש
Shin (letter)
Shin literally means "Sharp" ; It is the twenty-first letter in many Semitic abjads, including Phoenician , Aramaic/Hebrew , and Arabic ....

, ת
Taw (letter)
Taw, Tav or Taf is the twenty-second and last letter in many Semitic abjads, including Phoenician, Aramaic, Hebrew Taw and Arabic alphabet .Its original sound value is ....

.

Latin alphabet
Latin alphabet
The Latin alphabet, also called the Roman alphabet, is the most recognized alphabet used in the world today. It evolved from a western variety of the Greek alphabet called the Cumaean alphabet, which was adopted and modified by the Etruscans who ruled early Rome...

: A
A
A is the first letter and a vowel in the basic modern Latin alphabet. It is similar to the Ancient Greek letter Alpha, from which it derives.- Origins :...

, B
B
B is the second letter in the basic modern Latin alphabet. It is used to represent a variety of bilabial sounds , most commonly a voiced bilabial plosive.-History:...

, C
C
Ĉ or ĉ is a consonant in Esperanto orthography, representing the sound .Esperanto orthography uses a diacritic for all four of its postalveolar consonants, as do the Latin-based Slavic alphabets...

, D
D
D is the fourth letter in the basic modern Latin alphabet.- History :The Semitic letter Dâlet may have developed from the logogram for a fish or a door. There are various Egyptian hieroglyphs that might have inspired this. In Semitic, Ancient Greek, and Latin, the letter represented ; in the...

, E
E
E is the fifth letter and a vowel in the basic modern Latin alphabet. It is the most commonly used letter in the Czech, Danish, Dutch, English, French, German, Hungarian, Latin, Norwegian, Spanish, and Swedish languages.-History:...

, F
F
F is the sixth letter in the basic modern Latin alphabet.-History:The origin of ⟨f⟩ is the Semitic letter vâv that represented a sound like or . Graphically, it originally probably depicted either a hook or a club...

, G
G
G is the seventh letter in the basic modern Latin alphabet.-History:The letter 'G' was introduced in the Old Latin period as a variant of ⟨c⟩ to distinguish voiced, from voiceless, . The recorded originator of ⟨g⟩ is freedman Spurius Carvilius Ruga, the first Roman to open a fee-paying school,...

, H
H
H .) is the eighth letter in the basic modern Latin alphabet.-History:The Semitic letter ⟨ח⟩ most likely represented the voiceless pharyngeal fricative . The form of the letter probably stood for a fence or posts....

, I
I
I is the ninth letter and a vowel in the basic modern Latin alphabet.-History:In Semitic, the letter may have originated in a hieroglyph for an arm that represented a voiced pharyngeal fricative in Egyptian, but was reassigned to by Semites, because their word for "arm" began with that sound...

, J
J
Ĵ or ĵ is a letter in Esperanto orthography representing the sound .While Esperanto orthography uses a diacritic for its four postalveolar consonants, as do the Latin-based Slavic alphabets, the base letters are Romano-Germanic...

, K
K
K is the eleventh letter of the English and basic modern Latin alphabet.-History and usage:In English, the letter K usually represents the voiceless velar plosive; this sound is also transcribed by in the International Phonetic Alphabet and X-SAMPA....

, L
L
Ł or ł, described in English as L with stroke, is a letter of the Polish, Kashubian, Sorbian, Łacinka , Łatynka , Wilamowicean, Navajo, Dene Suline, Inupiaq, Zuni, Hupa, and Dogrib alphabets, several proposed alphabets for the Venetian language, and the ISO 11940 romanization of the Thai alphabet...

, M
M
M is the thirteenth letter of the basic modern Latin alphabet.-History:The letter M is derived from the Phoenician Mem, via the Greek Mu . Semitic Mem probably originally pictured water...

, N
N
N is the fourteenth letter in the basic modern Latin alphabet.- History of the forms :One of the most common hieroglyphs, snake, was used in Egyptian writing to stand for a sound like English ⟨J⟩, because the Egyptian word for "snake" was djet...

, O
O
O is the fifteenth letter and a vowel in the basic modern Latin alphabet.The letter was derived from the Semitic `Ayin , which represented a consonant, probably , the sound represented by the Arabic letter ع called `Ayn. This Semitic letter in its original form seems to have been inspired by a...

, P
P
P is the sixteenth letter of the basic modern Latin alphabet.-Usage:In English and most other European languages, P is a voiceless bilabial plosive. Both initial and final Ps can be combined with many other discrete consonants in English words...

, Q
Q
Q is the seventeenth letter of the basic modern Latin alphabet.- History :The Semitic sound value of Qôp was , a sound common to Semitic languages, but not found in English or most Indo-European ones...

, R
R
R is the eighteenth letter of the basic modern Latin alphabet.-History:The original Semitic letter may have been inspired by an Egyptian hieroglyph for tp, "head". It was used for by Semites because in their language, the word for "head" was rêš . It developed into Greek Ρ and Latin R...

, S
S
S is the nineteenth letter in the ISO basic Latin alphabet.-History: Semitic Šîn represented a voiceless postalveolar fricative . Greek did not have this sound, so the Greek sigma came to represent...

, T
T
T is the 20th letter in the basic modern Latin alphabet. It is the most commonly used consonant and the second most common letter in the English language.- History :Taw was the last letter of the Western Semitic and Hebrew alphabets...

, U
U
U is the twenty-first letter and a vowel in the basic modern Latin alphabet.-History:The letter U ultimately comes from the Semitic letter Waw by way of the letter Y. See the letter Y for details....

, V
V
V is the twenty-second letter in the basic modern Latin alphabet.-Letter:The letter V comes from the Semitic letter Waw, as do the modern letters F, U, W, and Y. See F for details....

, W
W
W is the 23rd letter in the basic modern Latin alphabet.In other Germanic languages, including German, its pronunciation is similar or identical to that of English V...

, X
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...

, Y
Y
Y is the twenty-fifth letter in the basic modern Latin alphabet and represents either a vowel or a consonant in English.-Name:In Latin, Y was named Y Graeca "Greek Y". This was pronounced as I Graeca "Greek I", since Latin speakers had trouble pronouncing , which was not a native sound...

, Z
Z
Z is the twenty-sixth and final letter of the basic modern Latin alphabet.-Name and pronunciation:In most dialects of English, the letter's name is zed , reflecting its derivation from the Greek zeta but in American English, its name is zee , deriving from a late 17th century English dialectal...

.

For other writing systems and their letters, see List of writing systems and List of alphabets.

Upper and lower case

Some writing systems have two major forms for each letter: an upper case form (also called capital or majuscule) and a lower case form (also called minuscule). Upper and lower case forms represent the same sound, but serve different functions in writing. Capital letters are most often used at the beginning of a sentence, as the first letter of a proper name, or in inscriptions or headers. They may also serve other functions, such as in the German language
German language
German is a West Germanic language, related to and classified alongside English and Dutch. With an estimated 90 – 98 million native speakers, German is one of the world's major languages and is the most widely-spoken first language in the European Union....

 where all noun
Noun
In linguistics, a noun is a member of a large, open lexical category whose members can occur as the main word in the subject of a clause, the object of a verb, or the object of a preposition .Lexical categories are defined in terms of how their members combine with other kinds of...

s begin with capital letters.

Typeface and font

A letter may be printed in a number of different sizes or forms, depending on choice of typeface. A typeface
Typeface
In typography, a typeface is the artistic representation or interpretation of characters; it is the way the type looks. Each type is designed and there are thousands of different typefaces in existence, with new ones being developed constantly....

 is a single, stylistically consistent set of forms for letters (or glyphs). A particular typeface may alter standard forms of characters, may present them with different optical weight, or may angle or embellish their forms. A font
Typeface
In typography, a typeface is the artistic representation or interpretation of characters; it is the way the type looks. Each type is designed and there are thousands of different typefaces in existence, with new ones being developed constantly....

 is more specific than a typeface, since it specifies the size of the letters as well as the form.

In calligraphy
Calligraphy
Calligraphy is a type of visual art. It is often called the art of fancy lettering . A contemporary definition of calligraphic practice is "the art of giving form to signs in an expressive, harmonious and skillful manner"...

, letters are written artistically and may or may not be consistent throughout a work.

Letter frequencies

The average distribution of letters, or the relative frequency of each letter's occurrence in text in a given language can be obtained analyzing large amounts of representative text. This information can be useful in cryptography
Cryptography
Cryptography is the practice and study of techniques for secure communication in the presence of third parties...

 and for other purposes as well. Letter frequencies vary in different types of writing. In English, the most frequently appearing ten letters are e, t, a, o, i, n, s, h, r, and d, in that order, with the letter e appearing about 13% of the time.

See also

  • Abecedarium
    Abecedarium
    An abecedarium is an inscription consisting of the letters of an alphabet, almost always listed in order. Typically, abecedaria are practice exercises....

  • Alphabet
    Alphabet
    An alphabet is a standard set of letters—basic written symbols or graphemes—each of which represents a phoneme in a spoken language, either as it exists now or as it was in the past. There are other systems, such as logographies, in which each character represents a word, morpheme, or semantic...

  • Alphabets derived from the Latin
    Alphabets derived from the Latin
    A Latin alphabet is an alphabetical writing system that uses letters of the original Roman Latin alphabet and often various extensions, the Latin script...

  • Artificial script
  • Character (computing)
    Character (computing)
    In computer and machine-based telecommunications terminology, a character is a unit of information that roughly corresponds to a grapheme, grapheme-like unit, or symbol, such as in an alphabet or syllabary in the written form of a natural language....

  • Collation
    Collation
    Collation is the assembly of written information into a standard order. One common type of collation is called alphabetization, though collation is not limited to ordering letters of the alphabet...

  • Diacritic
    Diacritic
    A diacritic is a glyph added to a letter, or basic glyph. The term derives from the Greek διακριτικός . Diacritic is both an adjective and a noun, whereas diacritical is only an adjective. Some diacritical marks, such as the acute and grave are often called accents...

  • Digraph (orthography)
    Digraph (orthography)
    A digraph or digram is 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...

  • Glyph
    Glyph
    A glyph is an element of writing: an individual mark on a written medium that contributes to the meaning of what is written. A glyph is made up of one or more graphemes....

  • Grapheme
  • Use of Greek letters in mathematics
    Greek letters used in mathematics
    Greek letters are used in mathematics, science, engineering, and other areas where mathematical notation is used as symbols for constants, special functions, and also conventionally for variables representing certain quantities. In these contexts, the capital letters and the small letters represent...

  • History of the alphabet
    History of the alphabet
    The origins of the alphabet are unknown, but there are several theories as to how it developed. One popular proposal — the Proto-Sinaitic theory — is that the history of the alphabet began in Ancient Egypt, more than a millennium into the history of writing...

  • Letterform
    Letterform
    A letterform, letter-form or letter form, is a term used especially in typography, paleography, calligraphy and epigraphy to mean a letter's shape.In one sense, letterform applies strictly to the design of individual letters...

  • Ligature
    Ligature (typography)
    In writing and typography, a ligature occurs where two or more graphemes are joined as a single glyph. Ligatures usually replace consecutive characters sharing common components and are part of a more general class of glyphs called "contextual forms", where the specific shape of a letter depends on...

  • Orthography
    Orthography
    The orthography of a language specifies a standardized way of using a specific writing system to write the language. Where more than one writing system is used for a language, for example Kurdish, Uyghur, Serbian or Inuktitut, there can be more than one orthography...

  • Roman letters used in mathematics
    Roman letters used in mathematics
    Many letters of the Latin alphabet, both capital and small, are used in mathematics, science and engineering to denote by convention specific or abstracted constants, variables of a certain type, units, multipliers, physical entities...

  • Typeface
    Typeface
    In typography, a typeface is the artistic representation or interpretation of characters; it is the way the type looks. Each type is designed and there are thousands of different typefaces in existence, with new ones being developed constantly....

  • Typography
    Typography
    Typography is the art and technique of arranging type in order to make language visible. The arrangement of type involves the selection of typefaces, point size, line length, leading , adjusting the spaces between groups of letters and adjusting the space between pairs of letters...

  • Unicode
    Unicode
    Unicode is a computing industry standard for the consistent encoding, representation and handling of text expressed in most of the world's writing systems...


External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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