| 長音 | [ちょうおん, chouon] (n, adj-no) long vowel [Add to Longdo] |
| 長音階 | [ちょうおんかい, chouonkai] (n) major scale [Add to Longdo] |
| 長音符 | [ちょうおんぷ, chouonpu] (n) katakana-hiragana prolonged sound mark; macron (indicating a long vowel); circumflex (indicating a long vowel); modifier letter triangular colon (IPA diacritical) [Add to Longdo] |
| 長音符号 | [ちょうおんぶごう, chouonbugou] (n) (See ー, 長音符) long vowel symbol [Add to Longdo] |