The state or quality of being malignant; extreme malevolence; bitter enmity; malice; as, malignancy of heart.
Unfavorableness; evil nature.
Virulence; tendency to a fatal issue; as, the malignancy of an ulcer or of a fever.
The state of being a malignant.
Medical description of a continuously destructive illness; tendency of a medical condition to become progressively worse; characterization of cancer, characterized by anaplasia, invasiveness, and metastasis
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Malignancy in Spanish is Malignidad