# vacciolation

> English word · Noun

## Definitions
1. Innoculation with cowpox (the vacciolous virus) in order to provide immunity from smallpox.

## Etymology
Coined by Dr. John Walker in 1802 from vacciolate + -ion.

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