Meaning of virulent

vir•u•lent

Pronunciation: (vir'yu-lunt, vir'u-), [key]
— adj.
  1. actively poisonous; intensely noxious: a virulent insect bite.
  2. highly infective; malignant or deadly.
  3. causing clinical symptoms.
  4. violently or spitefully hostile.
  5. intensely bitter, spiteful, or malicious: a virulent attack.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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