1. A tumour that is malignant and tends to spread to other parts of the body
   - malignant tumor [US], malignant neoplasm, metastatic tumor [US], metastatic tumour [Brit, Cdn]

Derived forms: malignant tumours

Type of: malignance, malignancy, neoplasm, tumor [US], tumour [Brit, Cdn]

Encyclopedia: Malignant tumour

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