口こう蓋がい音おん

こ

う

が

い

お

ん

Meanings

1

noun

palatal sound; palatal

linguistics

Linguistics term for a consonant articulated with the tongue against the hard palate, such as the Japanese 拗音 (ようおん) consonants.

mouth

蓋cover, lid, flap

音sound, noise

拗よう音おん
拗音 refers specifically to the contracted sounds in Japanese kana (e.g., きゃ, しゅ), which are palatalized, while 口蓋音 is the broader linguistic category of palatal consonants.
硬こう口こう蓋がい音おん
硬口蓋音 is a more precise term for 'hard palate sound', often used interchangeably with 口蓋音 in phonetics.

Compound of 口蓋 (こうがい, 'palate') and 音 (おん, 'sound').