What is the meaning of Virulent?

Of animals, plants, or substances: extremely venomous or poisonous.

Extremely hostile or malicious; intensely acrimonious.

Of a disease or disease-causing agent: malignant, able to cause damage to the host.

Of a pathogen: replicating within its host cell, then immediately causing it to undergo lysis.

virulent

This term needs a translation to English. Please help out and add a translation, then remove the text {{rfdef}}.

virulent

virulent (hostile)

virulent

virulent

Source: wiktionary.org