Definition of vaccinia in English:

vaccinia

noun

Medicine
  • [mass noun] Cowpox, or the virus which causes it.

    • ‘A live, replicating virus, vaccinia can cause side effects, which on rare occasions can be serious and potentially life-threatening.’
    • ‘The live vaccinia virus that is used for the smallpox vaccination is admittedly the most dangerous vaccine in use.’
    • ‘Then the immune-impaired and those susceptible to vaccinia complications could be inoculated against vaccinia while everyone else is inoculated against smallpox.’
    • ‘Smallpox vaccine contains live vaccinia virus, a milder cousin of the variola virus.’
    • ‘Jenner waited only four years before declaring that the vaccine that he named vaccinia provided immunity from smallpox for life.’

Origin

Early 19th century: modern Latin, from Latin vaccinus (see vaccine).

Pronunciation:

vaccinia

/vakˈsɪnɪə/