ː

ː U+02D0, ː MODIFIER LETTER TRIANGULAR COLON ← ˏ [U+02CF] Spacing Modifier Letters ˑ → [U+02D1]

Character variations

𐞁 U+10781, 𐞁 MODIFIER LETTER SUPERSCRIPT TRIANGULAR COLON ← 𐞀 [U+10780] Latin Extended-F 𐞂 → [U+10782]

The IPA colon isn't necessarily triangular. This typeface is Doulos SIL, one of four approved by the IPA.

See also: [[|:]] [U+003A COLON], ꞉ [U+A789 MODIFIER LETTER COLON], ∶ [U+2236 RATIO], ⁚ [U+205A TWO DOT PUNCTUATION], ։ [U+0589 ARMENIAN FULL STOP], and ׃ [U+05C3 HEBREW PUNCTUATION SOF PASUQ]

Translingual

Design

A letter colon, i.e. ⟨꞉⟩, made triangular to be more distinct from the punctuation colon.

Symbol

ː

1. (IPA) long (e.g. a long vowel [aː], a geminate consonant [pː]).
2. (superscript ⟨𐞁⟩, IPA) extension of the feature indicated by a diacritic (e.g. a highly aspirated consonant [kʰ𐞁]).

Usage notes

The symbol may be doubled to indicate an extra-long segment: [aːː], [pːː] or (as a superscript) [qʰ𐞁𐞁].

The colon may carry diacritics, e.g. for tone in [sáː̀] (falling tone on a long vowel) or nasalization in [saː̃]. See length (phonetics).

A superscript colon is used for example in [kʰ𐞁], a [k] with longer aspiration than [pʰ] and [tʰ𐞂]. The diacritic may instead be doubled, i.e. [kʰʰ], but that allows only a two-way distinction.

Further reading

• colon (letter) on Wikipedia.Wikipedia