- the relative ability of a microorganism to cause disease; degree of pathogenicity.
- the capability of a microorganism to cause disease.
Examples from the Web for virulency
The controversy between the two is noted for the virulency of the personal invective.Hazlitt on English Literature|Jacob Zeitlin
And the prophets, in spite of their virulency, produced the highest forms of artistic beauty.The Literature of Ecstasy|Albert Mordell
Thirdly, from the virulency of the liquor it ejects, and the sad effects and symptoms that follow it.Micrographia|Robert Hooke
Sometimes, without doubt, the virulency of the disease is lessened.The Pears of New York|U. P. Hedrick
British Dictionary definitions for virulency
Word Origin and History for virulency
1660s (virulency attested from 1610s), from Latin virulentia, from virulentus (see virulent).