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This article is about the letter of the alphabet. For other uses, see B (disambiguation).
For technical reasons, "B#" redirects here. For B-sharp, see B♯.
Writing cursive forms of B

B or b (pronounced /ˈb/, bee)[1][2] is the second letter in the ISO basic Latin alphabet. It represents the voiced bilabial stop in many languages, including English. In some other languages, it is used to represent other bilabial consonants.


Modern Roman
Egyptian hieroglyphic house Phoenician beth Greek beta Etruscan B Roman B Runic B Uncial B Insular b Blackletter b Antiqua B Roman B & b

Old English was originally written in runes, whose equivalent letter was beorc⟩, meaning "birch". Beorc dates to at least the 2nd-century Elder Futhark, which is now thought to have derived from the Old Italic alphabets' ⟨ 𐌁 ⟩ either directly or via LatinB⟩.

The uncialB⟩ and half-uncialb⟩ introduced by the Gregorian and Irish missions gradually developed into the Insular scripts' ⟨b⟩. These Old English Latin alphabets supplanted the earlier runes, whose use was fully banned under King Canute in the early 11th century. The Norman Conquest popularized the Carolingian half-uncial forms which latter developed into blackletter ⟨ b ⟩. Around 1300, letter case was increasingly distinguished, with upper- and lower-case B taking separate meanings. Following the advent of printing in the 15th century, Germany and Scandinavia continued to use forms of blackletter (particularly Fraktur), while England eventually adopted the humanist and antiqua scripts developed in Renaissance Italy from a combination of Roman inscriptions and Carolingian texts. The present forms of the English cursive B were developed by the 17th century.

The Roman ⟨B⟩ derived from the Greek capital betaΒ⟩ via its Etruscan and Cumaean variants. The Greek letter was an adaptation of the Phoenician letter bēt𐤁⟩.[3] The Egyptian hieroglyph for the consonant /b/ had been an image of a foot and calf ⟨ B ⟩,[4] but bēt (Phoenician for "house") was a modified form of a Proto-Sinaitic glyph ⟨ Bet ⟩ probably adapted from the separate hieroglyph Pr Per meaning "house".[5][n 1] The Hebrew letter bethב⟩ is a separate development of the Phoenician letter.[3]

By Byzantine times, the Greek letter ⟨Β⟩ came to be pronounced /v/,[3] so that it is known in modern Greek as víta (still written βήτα). The Cyrillic letter veВ⟩ represents the same sound, so a modified form known as beБ⟩ was developed to represent the Slavic languages' /b/.[3] (Modern Greek continues to lack a letter for the voiced bilabial plosive and transliterates such sounds from other languages using the digraph/consonant clusterμπ⟩, mp.)

Use in writing systems


In English, ⟨b⟩ denotes the voiced bilabial stop /b/, as in bib. In English, it is sometimes silent. This occurs particularly in words ending in ⟨mb⟩, such as lamb and bomb, some of which originally had a /b/ sound, while some had the letter ⟨b⟩ added by analogy (see Phonological history of English consonant clusters). The ⟨b⟩ in debt, doubt, subtle, and related words was added in the 16th century as an etymological spelling, intended to make the words more like their Latin originals (debitum, dubito, subtilis).

As /b/ is one of the sounds subject to Grimm's Law, words which have ⟨b⟩ in English and other Germanic languages may find their cognates in other Indo-European languages appearing with ⟨bh⟩, ⟨p⟩, ⟨f⟩ or ⟨φ⟩ instead.[3] For example, compare the various cognates of the word brother.

Other languages

Many other languages besides English use ⟨b⟩ to represent a voiced bilabial stop.

In Estonian, Icelandic, and Chinese Pinyin, ⟨b⟩ does not denote a voiced consonant. Instead, it represents a voiceless /p/ that contrasts with either a geminated /p:/ (in Estonian) or an aspirated /pʰ/ (in Pinyin, Danish and Icelandic) represented by ⟨p⟩. In Fijian ⟨b⟩ represents a prenasalized /mb/, whereas in Zulu and Xhosa it represents an implosive /ɓ/, in contrast to the digraph ⟨bh⟩ which represents /b/. Finnish uses ⟨b⟩ only in loanwords.

Phonetic transcription

In the International Phonetic Alphabet, [b] is used to represent the voiced bilabial stop phone. In phonological transcription systems for specific languages, /b/ may be used to represent a lenis phoneme, not necessarily voiced, that contrasts with fortis /p/ (which may have greater aspiration, tenseness or duration).

Other uses

Main article: B (disambiguation)

B is also a musical note. In English-speaking countries, it represents Si, the 12th note of a chromatic scale built on C. In Central Europe and Scandinavia, "B" is used to denote B-flat and the 12th note of the chromatic scale is denoted "H". Archaic forms of 'b', the b quadratum (square b, ) and b rotundum (round b, ) are used in musical notation as the symbols for natural and flat, respectively.

In Contracted (grade 2) English braille, 'b' stands for "but" when in isolation.

In computer science, B is the symbol for byte, a unit of information storage.

In engineering, B is the symbol for bel, a unit of level.

In chemistry, B is the symbol for boron, a chemical element.

Related characters

Ancestors, descendants and siblings

  • 𐤁 : Semitic letter Bet, from which the following symbols originally derive
  • Β β : Greek letter Beta, from which B derives
  • Ⲃ ⲃ Coptic letter Bēta, which derives from Greek Beta
  • В в : Cyrillic letter Ve, which also derives from Beta
  • Б б : Cyrillic letter Be, which also derives from Beta
  • 𐌁 : Old Italic B, which derives from Greek Beta
  • ᛒ : Runic letter Berkanan, which probably derives from Old Italic B
  • 𐌱 : Gothic letter bercna, which derives from Greek Beta
  • IPA-specific symbols related to B: ɓ ʙ β
  • B with diacritics: Ƀ ƀ Ḃ ḃ Ḅ ḅ Ḇ ḇ Ɓ ɓ

Derived ligatures, abbreviations, signs and symbols

  • ␢ : U+2422 Blank Symbol
  • ฿ : Thai baht
  • ♭: The flat in music, mentioned above, still closely resembles lowercase b.

Computing codes

Character B b
Encodings decimal hex decimal hex
Unicode 66 U+0042 98 U+0062
UTF-8 66 42 98 62
Numeric character reference B B b b
EBCDIC family 194 C2 130 82
ASCII 1 66 42 98 62
1 Also for encodings based on ASCII, including the DOS, Windows, ISO-8859 and Macintosh families of encodings.

Other representations

NATO phonetic Morse code
Bravo –···
ICS Bravo.svg Semaphore Bravo.svg ⠃
Signal flag Flag semaphore Braille


  1. ^ It also resembles the hieroglyph for /h/ ⟨ H ⟩ meaning "manor" or "reed shelter".



  1. ^ "B", Oxford English Dictionary, 2nd ed., Oxford: Oxford University Press, 1989 .
  2. ^ "B", Merriam-Webster's 3rd New International Dictionary of the English Language, Unabridged, 1993 .
  3. ^ a b c d e EB (1878).
  4. ^ Schumann-Antelme, Ruth; et al. (1998), Illustrated Hieroglyphics Handbook, English translation by Sterling Publishing (2002), pp. 22–23, ISBN 1-4027-0025-3 .
  5. ^ Goldwasser, Orly (Mar–Apr 2010), "How the Alphabet Was Born from Hieroglyphs", Biblical Archaeology Review, Vol. 36 (No. 1), Washington: Biblical Archaeology Society, ISSN 0098-9444 .


  • "B", Encyclopædia Britannica, 9th ed., Vol. III, New York: Charles Scribner's Sons, 1878, p. 173 .
  • "B", Encyclopædia Britannica, 11th ed., Vol. III, Cambridge: Cambridge University Press, 1911, p. 87 .

External links

  • Media related to B at Wikimedia Commons
  • The dictionary definition of B at Wiktionary
  • The dictionary definition of b at Wiktionary
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