口こう蓋がい骨こつこうがいこつMeanings1nounpalatine boneanatomyAnatomical term for the paired bone forming part of the hard palate and nasal cavity.口こう蓋がい骨こつは上うわ顎あごの奥おくにある骨ほねです。The palatine bone is a bone located deep in the upper jaw.