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When used as a
diacritic mark, the term 'dot' is usually reserved for the ''
Interpunct'' ( · ), or 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 Central European languages and
Vietnamese.
Overdot
Language scripts or transcription schemes that use the dot as a diacritic mark:
★ In
Arabic romanization, '' stands for the letter ''
ghayin''.
★
Traditional Irish typography, where the dot denotes
lenition, and is called a ''ponc séimhithe'' or ''Builte'' "dot of lenition": ''. Alternatively, lenition may be represented by a following letter ''h'', thus: ''bh ch dh fh gh mh ph st th''. In
Old Irish orthography, the dot was used only for '', while the following ''h'' was used for ''ch ph th''; lenition of other letters was not indicated. Later the two systems spread to the entire set of lenitable consonants and competed with each other. Eventually the standard practice was to use the dot when writing in
Gaelic script and the following ''h'' when writing in
antiqua. Thus ''ċ'' and ''ch'' represent the same phonetic element in Modern Irish.
★
Lithuanian: ''
ė''
★
Maltese: ''
ċ ġ ż''
★
Polish: ''ż''
★ The dot above lowercase ''
i'' and ''
j'' (and uppercase ''
İ'' in
Turkish) is not regarded as an independent diacritic, but rather as an integral part of the letter. It is called a
tittle.
The overdot is also used in the
Devanagari script, where it is called ''anusvara''.
In
mathematics and
physics the dot denotes the
time derivative as in
.
Underdot
★ In
IAST and
National Library at Calcutta romanization, transcribing
Indic languages, a dot below a letter indicates
retroflex consonants, while an underdot signifies an
emphatic consonant.
★
★ , also used in the
O'odham language.
★
★ , also used in unofficial transcriptions of
Asturian.
★ In
romanizations of
Semitic languages, a dot below a consonant is used to indicate
emphatic consonants. For example, '' represents an emphatic ''s''.
★
★
★
★
★
★
★
★
★
★
★
Vietnamese. The ''nặng''
tone (low, glottal) is represented with a dot below the base vowel: ''ạ ặ ậ ẹ ệ ị ọ ộ ợ ụ ự ỵ''.
★ In
Yoruba, the dot is used below the ''o'', the ''e'' and the ''s'': those three letters can also occur without dot as another letter.
The underdot is also used in the
Devanagari script, where it is called ''anunaasika''.
Technical notes
The 'Overdot diacritic' (
Unicode combining diacritic "combining dot above" U+0307 ̇).
Precomposed characters:
Ȧ,
Ḃ,
Ċ,
Ḋ,
Ė,
Ḟ,
Ġ,
Ḣ,
İ,
Ṁ,
Ṅ,
Ȯ,
Ṗ,
Ṙ,
Ṡ,
Ṫ,
Ẇ,
Ẋ,
Ẏ,
Ż.
See also
★
Ȧ
★
Chandrabindu
★
Tittle
★
Turkish dotted and dotless I
External links
★
Diacritics Project — All you need to design a font with correct accents