smallpox

noun

small·​pox ˈsmȯl-ˌpäks How to pronounce smallpox (audio)
: an acute contagious febrile disease of humans that is caused by a poxvirus (species Variola virus of the genus Orthopoxvirus), is characterized by a skin eruption with pustules, sloughing, and scar formation, and is believed to have been eradicated globally by widespread vaccination

called also variola

Examples of smallpox in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Throughout the program’s history, EIS officers have been the first line of defense against anthrax, Ebola, smallpox, polio, E. coli, and, yes, bird flu. Nicholas Florko, The Atlantic, 20 Feb. 2025 But Americans were not the only ones: The Soviet Union worked even longer on biological weapons, experimenting with smallpox and other highly lethal pathogens. Meredith Wolf Schizer, Newsweek, 19 Feb. 2025 This aside is a rare reference to the efforts Washington employed in February 1777 to have the whole Continental Army inoculated against smallpox. Eli Wizevich, Smithsonian Magazine, 18 Feb. 2025 Broadening out to look at all vaccines, a landmark May 2024 study led by WHO estimated that 154 million lives had been saved by immunization programs covering diseases including smallpox, tuberculosis, measles and polio over the past 50 years, including 101 million infants. Soph Warnes, CNN, 2 Feb. 2025 See All Example Sentences for smallpox

Word History

First Known Use

circa 1562, in the meaning defined above

Time Traveler
The first known use of smallpox was circa 1562

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Cite this Entry

“Smallpox.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/smallpox. Accessed 3 Mar. 2025.

Kids Definition

smallpox

noun
small·​pox ˈsmȯl-ˌpäks How to pronounce smallpox (audio)
: a sometimes deadly disease that is caused by a virus, is characterized by fever and a skin rash, and is believed to have been wiped out worldwide as a result of vaccination

Medical Definition

smallpox

noun
small·​pox ˈsmȯl-ˌpäks How to pronounce smallpox (audio)
: an acute contagious febrile disease of humans that is caused by a poxvirus of the genus Orthopoxvirus (species Variola virus), is characterized by skin eruption with pustules, sloughing, and scar formation, and is believed to have been eradicated globally by widespread vaccination

called also variola

see variola major, variola minor

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