促音便
そくおんびん
nasal sound change (generation of geminate consonant, primarily a geminate 't' from vowel stems ending in 'i')
促音 is read as そくおん (sokuon) and means geminate consonant (small "tsu" in Japanese).
そくおん
sokuon
そくおんびん
nasal sound change (generation of geminate consonant, primarily a geminate 't' from vowel stems ending in 'i')