long-vowel mark

noun

The symbol ː (the triangular colon), which marks long vowels in IPA.

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Meanings

nounlong-vowel mark (plural long-vowel marks)

plural long-vowel marks

  1. The symbol ː (the triangular colon), which marks long vowels in IPA.
  2. The symbol ー, which marks long vowels in Japanese hiragana and katakana.

Synonyms & antonyms

Also see
triangular colon
Cite this entry
APA

long-vowel mark. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/long-vowel%20mark

MLA

“long-vowel mark.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/long-vowel%20mark. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “long-vowel mark,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/long-vowel%20mark.

Source: long-vowel mark on Wiktionary, CC BY-SA 4.0.