# vaccinia

> English word · Noun

## Definitions
1. An infection of cowpox.
2. A virus which causes this infection (Orthpoxvirus vaccinia).
3. A closely related poxvirus, used as a smallpox vaccine.

## Etymology
From Latin vaccinus + -ia.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/vaccinia