Jump to content

Dot (diacritic)

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by Drmccreedy (talk | contribs) at 01:09, 22 October 2023 (Undid revision 1181271783 by Matheito8902 (talk) Partial revert of good faith edit because "J̇" doesn't appear anywhere in the article. Some usage should be noted.). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

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

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.

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 of the letter i
  • Arabic alphabet
  • Hebrew diacritics

References

  1. ^ a b c United Nations Group of Experts on Geographical Names (2007). Technical reference manual for the standardization of geographical names (PDF). New York: United Nations. p. 169. ISBN 978-92-1-161500-5.