ミグマタイトミグマタイトMeanings1nounmigmatiteA type of rock formed under high temperature and pressure, intermediate between metamorphic and igneous. Used in geology.ミグマタイトは変へん成せい岩がんと火か成せい岩がんの中ちゅう間かん的てきな岩がん石せきです。Migmatite is a rock intermediate between metamorphic and igneous rocks.