·

Definition from Wiktionary, the free dictionary
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See also: [U+22C5 DOT OPERATOR], [U+2022 BULLET], [U+2027 HYPHENATION POINT], [U+30FB KATAKANA MIDDLE DOT], and [U+FF65 HALFWIDTH KATAKANA MIDDLE DOT]
Interpunct.svg
· U+00B7, ·
MIDDLE DOT

[U+00B6]
Latin-1 Supplement ¸
[U+00B8]
U+22C5, ⋅
(LaTeX: \cdot)
DOT OPERATOR

[U+22C4]
Mathematical Operators
[U+22C6]
◌̇ U+0307, ̇
COMBINING DOT ABOVE
◌̆
[U+0306]
Combining Diacritical Marks ◌̈
[U+0308]
· U+0387, ·
GREEK ANO TELEIA
Ά
[U+0386]
Greek and Coptic Έ
[U+0388]

Translingual[edit]

Description[edit]

A dot.

Symbol[edit]

·

  1. (mathematics) The product operator.
    7 · 8 = 56
    Synonyms: ×, *
    Antonyms: ÷, /
  2. (in a few countries, such as the UK) A decimal point.
    3·14, £1,234·99
  3. (mathematics, vectors) The dot product operator.
    (1,2,5) · (3,4,−1) = 6
  4. (Gregg shorthand) the letter a
  5. (mathematics) Indicates what elements can vary.
    If we have f(x,y) we can analyze the properties of f(·,y) which is a function of x found by fixing a particular y.
  6. (chemistry) Indicates addition compounds.
    BF3·NH3
  7. See for the middle dot used in Japanese katakana.

Usage notes[edit]

  • (decimal point): Many Britons employ the American decimal point ⟨.⟩ owing to a general lack of support for the middot character on computers. It remains common in writing done by hand.
  • (Gregg shorthand, letter a): · (dot) is the shorthand form of a in Centennial, Series 90, DJS, Simplified, Anniversary, and Pre-Anniversary shorthand.
  • (addition compound): The IUPAC Recommendations for Nomenclature of Organic Chemistry[1] state: "Centre dots in formulae of (formal) addition compounds, including hydrates, adducts, clathrates, double salts and double oxides, separate the individual constituents. The dot is written in the centre of the line to distinguish it from afull stop (period)."

Synonyms[edit]

  • (decimal point): ., ,
  • (dot product):

See also[edit]

Punctuation


References[edit]


Asturian[edit]

Diacritical mark[edit]

·

  1. A diacritical mark of the Latin script, called puntu inferior (dot below) in Asturian, and found on / and /.

Catalan[edit]

Diacritical mark[edit]

·

  1. A diacritical mark of the Latin script, called punt volat (“flown dot”) in Catalan, and found in the combination l·l to distinguish it from the digraph ll'.

Chinese[edit]

Punctuation mark[edit]

·

  1. Separates first and last names in foreign proper names.
    巴拉克·奧巴馬 / 巴拉克·奥巴马  ―  Bālākè · Àobāmǎ  ―  Barack Obama
  2. Separates the title of a literary work or collection from the title of a section.
    論語·子張 / 论语·子张  ―  “Lúnyǔ · Zǐzhāng”  ―  Analects, "Zizhang"
    青少年文庫·傲慢偏見 [MSC, trad.]
    青少年文库·傲慢偏见 [MSC, simp.]
    “Qīngshàonián Wénkù · Àomàn yǔ Piānjiàn” [Pinyin]
    Teenage Book Collection: Pride and Prejudice
  3. Separates the name of a fixed melody or format from the title of a poem or song.
    水調歌頭·明月幾時 [MSC, trad.]
    水调歌头·明月几时 [MSC, simp.]
    “Shuǐdiào Gētóu · Míngyuè Jǐshí Yǒu” [Pinyin]
    "Mid-Autumn Festival Night" to the tune of "Shuidiao Getou"
  4. Separates items in a list in titles.
    ··  ―  “Tiān ·· Rén”  ―  Heaven, Earth, Man
  5. Separates the month from the day in events, commemorations, etc. named after dates, only used after January ( ()), November (一一 (yīyī)) and December (一二 (yī'èr)) when hanzi are used.
    ·事變 / ·事变  ―  yī-èrbā shìbiàn  ―  January 28 Incident
    9·11襲擊事件 / 9·11袭击事件  ―  9-11 xíjī shìjiàn  ―  9/11 attacks
    九一八事變 / 九一八事变  ―  jiǔ-yībā shìbiàn  ―  Mukden Incident (lit. September 18 Incident)

Usage notes[edit]

  • Rarely used in general. Is used similarly to the Japanese symbol .

Greek[edit]

Punctuation mark[edit]

·

  1. (grammar) The raised point (άνω τελεία (áno teleía)) or Greek ; (semicolon).

Usage notes[edit]

  • · can be uniquely represented by the Unicode character U+0387 (GREEK ANO TELEIA).
  • In many places, including on Wiktionary, U+0387 is automatically converted to the MIDDLE DOT (U+00B7). This is because U+0387 is converted to U+00B7 by all Unicode normalizations.
  • In some fonts, U+0387 (·) is positioned higher than U+00B7 (·), similarly to the top point of a colon (:) or semicolon (;).

See also[edit]


Irish[edit]

Diacritical mark[edit]

̇

  1. A diacritical mark of the Latin script, called ponc séimhithe (lenition dot) in Irish, and found on /, Ċ/ċ, /, /, Ġ/ġ, /, /, / and /. (generally used only in Gaelic script; very rare in Latin script)

Latin[edit]

Punctuation mark[edit]

·

  1. Used to indicate a word boundary.
    1. ^ Nomenclature of Organic Chemistry – IUPAC Recommendations, 2005, http://old.iupac.org/publications/books/rbook/Red_Book_2005.pdf