髄ずい芽が腫しゅMeanings1nounmedulloblastomamedicineMedical term for a malignant brain tumor, primarily occurring in children.髄ずい芽が腫しゅは小しょう児にに多おおい悪あく性せい脳のう腫しゅ瘍ようです。Medulloblastoma is a malignant brain tumor common in children.