Noun malignant tumor has 1 sense
  1. 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
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