adult central nervous system germ cell tumor (Monarch Disease Ontology id MONDO_0003405) is a germ cell tumor of the central nervous system occurring in adults. Also known as: adult CNS germ cell neoplasm, adult CNS germ cell tumor, adult CNS germ cell tumour, adult central nervous system germ cell neoplasm, central nervous system germ cell tumor of adults, central nervous system germ cell tumour of adults, germ cell neoplasm of adult CNS, germ cell neoplasm of adult central nervous system.