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Noun: malignant tumor  mu'lig-nunt 'too-mur
Usage: US (elsewhere: malignant tumour)
  1. A tumor that is malignant and tends to spread to other parts of the body
    - malignant neoplasm, metastatic tumor [US], malignant tumour [Brit, Cdn], metastatic tumour [Brit, Cdn]

Derived forms: malignant tumors

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

Encyclopedia: Malignant tumor