Virulent
/vˈɪrələnt/
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Definition
(adj) Of animals, plants, or substances: extremely venomous or poisonous.
Sentence Examples
One can't discount a global disaster like a virulent plague.
Ebola is one of the most virulent viruses known to man.
CEFR Practice Quiz
The patient was treated for a ____ infection that was resistant to many of several common types of antibiotics today.