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vacciolation

noun

Coined: a coined word Wiktionary

noun Definition from Wiktionary (CC BY-SA). More about vacciolation at Wordnik → Where our words come from →

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

Origin

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

From Wiktionary, via Kaikki.org (CC BY-SA)