- malignant tumor, malignant neoplasm, metastatic tumor - a tumor that is malignant and tends to spread to other parts of the body
--1 is a kind of tumor, tumour, neoplasm; malignancy, malignance
--1 has particulars:carcinosarcoma; cancer, malignant neoplastic disease; angiosarcoma; myeloma; neuroblastoma; neuroepithelioma; retinoblastoma