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Character  ー 
Unicode name KATAKANA-HIRAGANA PROLONGED SOUND MARK
Codepoint U+30FC
See also: (kanji)

Japanese[edit]

English Wikipedia has an article on:

Wikipedia en

Japanese Wikipedia has an article on:

Wikipedia ja

Syllable[edit]

(Hepburn romanization ¯)

  1. long vowel mark : marks a long vowel in katakana and less commonly in hiragana (when placed after a syllable)

Usage notes[edit]

This mark appears as a horizontal line in horizontal writing (横書き) and as a vertical line in vertical writing (縦書き). The Japanese names are 長音符 (chōonpu), 音引き (onbiki) or 棒引き (bōbiki)