バソリスバソリスMeanings1nounbatholithGeological term for a large mass of intrusive igneous rock that formed deep underground.バソリスは、地ち下か深ふかくでゆっくり冷ひえて固かたまった巨きょ大だいな火か成せい岩がん体たいです。A batholith is a huge mass of igneous rock that cooled and solidified slowly deep underground.