火か山ざん岩がん塊かいかざんがんかいじ字FuriganaMeanings1nounvolcanic blockgeology›A solid fragment of rock ejected during a volcanic eruption, typically larger than 64 mm in diameter. Used in geology.火か山ざん岩がん塊かいは噴ふん火かの際さいに火か口
