infundibuloma in·fun·dib·u·lo·ma (ĭn'fən-dĭb'yə-lō'mə) n. pl. in·fun·dib·u·lo·mas or in·fun·dib·u·lo·ma·ta (-mə-tə) A piloid astrocytoma in tissues adjacent to the third ventricle of the cerebrum.
