JMdict: 2148350

開口音 【かいこうおん】

  1. [n] (of Chinese) pronunciation of kanji without a medial between the initial consonant and center vowel
  2. [n] (of Japanese) the long "o" vowel arising from combination of the "a" and "u" sounds
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
開 Open, Unfold, Unseal カイ ひら.く, ひら.き, -びら.き, ひら.ける, あ.く, あ.ける 3
口 Mouth コウ, ク くち 1
音 Sound, Noise オン, イン, -ノン おと, ね 1