Virulence
Pronunciation : Vir"u*lence, Vir"u*len*cy
Part of Speech : n.
Etymology : [Cf. F. virulence, L. virulentia an offensive odor, a stench.]
Definition : 1. The quality or state of being virulent or venomous; poisonousness; malignancy.
2. Extreme bitterness or malignity of disposition. "Refuted without satirical virulency." Barrow. The virulence of one declaimer, or the profundities and sublimities of the other. I. Taylor.
Source : Webster's Unabridged Dictionary, 1913