English

hypovirulent

From hypo- + virulent.

Proto-Indo-European *upó ‘under, below’

Ancient Greek ὑπό ‘under’

English hypo-

Proto-Indo-European *weys- ‘to flow’

…

Proto-Italic *weizos

Latin vīrus ‘poison’

Latin vīrulentus ‘poisonous’

Middle English virulent ‘leaking or seeping pus, purulent’

Today it means

adj Having a reduced virulence

Language periods are conventional ranges, not dates for this word.

Etymograph / hypovirulent