| n. | 1. | The quality or state of being virulent or venomous; poisonousness; malignancy. |
| 2. | Extreme bitterness or malignity of disposition. |
| Noun | 1. | virulence - extreme harmfulness (as the capacity of a microorganism to cause disease); "the virulence of the plague" Synonyms: virulency |
| 2. | virulence - extreme hostility; "the virulence of the malicious old man" Synonyms: virulency |