: smallpox
also : its causative poxvirus (species Variola virus of the genus Orthopoxvirus)

Examples of variola in a Sentence

Recent Examples on the Web
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Smallpox, or variola, is one of the deadliest pathogens to have struck humanity—in the best of cases, around a third of patients with smallpox would die and some versions were almost always fatal—and one of history’s biggest killers. Robert Hart, Forbes, 16 Aug. 2024 The variola virus that causes the deadly pox had been known to liquidate entire communities, towns, and cities since antiquity, stalking along trade routes and capitalizing upon human behavior and patterns of movement. Rebecca Kreston, Discover Magazine, 1 Aug. 2015

Word History

Etymology

borrowed from Medieval Latin, "pustule, pox," going back to Late Latin, "pustule," from varius "affected by pox, leprous" (adjective derivative of varus "pimple" + Latin -ola, variant of -ula -ule after vowels) — more at varix

Note: Late Latin varius is very likely independent of classical varius "having contrasting colors, varied" (see various entry 1).

First Known Use

1543, in the meaning defined above

Time Traveler
The first known use of variola was in 1543

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Cite this Entry

“Variola.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/variola. Accessed 30 Mar. 2025.

Medical Definition

variola

noun
: smallpox
also : the poxvirus of the genus Orthopoxvirus (species Variola virus) that is the causative agent of smallpox
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