歯し茎けい口こう蓋がい音おんしけいこうがいおんMeanings1nounalveopalatal consonantTechnical term in phonetics. Refers to consonants articulated with the tongue blade against the alveolar ridge and the body of the tongue raised toward the hard palate, such as the Japanese し, じ, ち, and ぢ.日本にほん語ごの「し」は歯し茎けい口こう蓋がい音おんに分ぶん類るいされる