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malignant

ma·lig·nant [ mə lígnənt ]


adjective 
Definition:
 
1. wanting to do evil: full of hate and showing a desire to harm others

2. harmful: likely to cause harm

3. medicine likely to spread: describes a tumor that invades the tissue around it and may spread to other parts of the body

4. medicine likely to cause death: used to describe a disease or condition that is liable to cause death or serious disablement unless effectively treated

[Mid-16th century. < late Latin, "plotting against" < Latin malignus "of evil kind"]

ma·lig·nant·ly adverb
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