malignant: Meaning and Definition of

ma•lig•nant

Pronunciation: (mu-lig'nunt), [key]
— adj.
  1. disposed to cause harm, suffering, or distress deliberately; feeling or showing ill will or hatred.
  2. very dangerous or harmful in influence or effect.
    1. tending to produce death, as bubonic plague.
    2. (of a tumor) characterized by uncontrolled growth; cancerous, invasive, or metastatic.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also: