- virulent (adj.)
[virulent 词源字典]
- c. 1400, in reference to wounds, ulcers, etc., "full of corrupt or poisonous matter," from Latin virulentus "poisonous," from virus "poison" (see virus). Figurative sense of "violent, spiteful" is attested from c. 1600. Related: Virulently.[virulent etymology, virulent origin, 英语词源]