malignant

Definition of Malignant in English :

1. malignant

dangerous to health; characterized by progressive and uncontrolled growth (especially of a tumor)

WordNet Lexical Database for English. Princeton University. 2010.

Malignant

adjective

1.

having or showing desire to harm others

2.

tending to cause great harm; injurious

3. pathology

(of a tumour) uncontrollable or resistant to therapy; rapidly spreading

noun

4. history (in the English Civil War) a Parliamentarian term for a royalist (sense 1)

adjective

1.

having an evil influence; malign

2.

wishing evil; very malevolent or malicious

3.

very harmful

4.

very dangerous or virulent; causing or likely to cause death; not benign; specif., cancerous

5. Obsolete

malcontent; rebellious; disaffected

noun

6. Archaic

a malcontent

adj.

1. Medicine

a. Tending to metastasize: a malignant tumor.

b. Virulent or threatening to life: a malignant disease.

2. Having or showing ill will; malicious: malignant thoughts.