Dot (diacritic)

When used as a diacritic mark, the term dot refers to the glyphs "combining dot above" (◌̇), and "combining dot below" (◌̣) which may be combined with some letters of the extended Latin alphabets in use in a variety of languages. Similar marks are used with other scripts.

◌̇ ◌̣
Dot
  • U+0307 ̇ COMBINING DOT ABOVE
  • U+0323 ̣ COMBINING DOT BELOW

Overdot

Language scripts or transcription schemes that use the dot above a letter as a diacritical mark:

The overdot is also used in the Devanagari script, where it is called anusvara.

In mathematics and physics, when using Newton's notation the dot denotes the time derivative as in . In addition, the overdot is one way used to indicate an infinitely repeating set of numbers in decimal notation, as in , which is equal to the fraction 13, and or , which is equal to 17.

Underdot

Raised dot and middle dot

  • In Canadian Aboriginal Syllabics, in addition to the middle dot as a letter, centred dot diacritic, and dot above diacritic, there also is a two-dot diacritic in the Naskapi language representing /_w_V/ which depending on the placement on the specific Syllabic letter may resemble a colon when placed vertically, diaeresis when placed horizontally, or a combination of middle dot and dot above diacritic when placed either at an angle or enveloping a small raised letter . Additionally, in Northwestern Ojibwe, a small raised /wi/ as /w/, the middle dot is raised farther up as either or ; there also is a raised dot "Final" (), which represents /w/ in some Swampy Cree and /y/ in some Northwestern Ojibwe.

Letters with dot

Encoding

In Unicode, the dot is encoded at:

  • U+0307 ̇ COMBINING DOT ABOVE

and at:

  • U+0323 ̣ COMBINING DOT BELOW
  • U+0358 ͘ COMBINING DOT ABOVE RIGHT
  • U+1DF8 COMBINING DOT ABOVE LEFT

There is also:

  • U+02D9 ˙ DOT ABOVE (˙, ˙)
  • U+18DF CANADIAN SYLLABICS FINAL RAISED DOT

Pre-composed characters:

See also

  • Anunaasika – Diacritic in Indic scripts
  • Chandrabindu – Diacritic mark typically denoting nazalization, in Indian abugidas
  • Interpunct – Typographical symbol, variously used as word delimiter, currency decimal delimiter, etc. (·)
  • Tittle – Diacritical mark, the dot element of the letters i and j
  • Arabic alphabet
  • Hebrew diacritics

References

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