noun Date: 1621 the quality or state of being virulent: as, extreme bitterness or malignity of temper ; rancor , malignancy , venomousness , the relative capacity of a pathogen to overcome body defenses
VIRULENCE
Meaning of VIRULENCE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012