toxo·​plas·​mo·​sis | \ ˌtäk-sə-ˌplaz-ˈmō-səs How to pronounce toxoplasmosis (audio) \
plural toxoplasmoses\ ˌtäk-​sə-​ˌplaz-​ˈmō-​ˌsēz How to pronounce toxoplasmoses (audio) \

Definition of toxoplasmosis

: infection of humans, other mammals, or birds with disease caused by a toxoplasma (Toxoplasma gondii) that invades the tissues and may seriously damage the central nervous system especially of infants

Examples of toxoplasmosis in a Sentence

Recent Examples on the Web That’s why infants are particularly vulnerable to intrauterine infections, which include toxoplasmosis, rubella, syphilis and Zika. Karen Weintraub, Scientific American, "HIV-Positive Babies Fare Better When Treatment Starts at Birth," 27 Nov. 2019 Cinder’s rescue comes at a time when otters face threats such as oil spills and toxoplasmosis gondii, a microorganism found in cat feces. Greta Bjornson,, "Meet Cinder the Sweet, Thriving Sea Otter Pup Who Was Found Orphaned and Near Death," 27 Sep. 2019 Based on the scientists’ analysis, the most dangerous form of Toxoplasma is a strain known as Type X. This variation, spread by both wild and domestic cats, was responsible for all 12 of the otter deaths linked primarily with toxoplasmosis. Meilan Solly, Smithsonian, "Parasite Spread by House Cats Is Killing California’s Sea Otters," 30 Aug. 2019 Animal Balance says the cats pose problems for bird populations and can carry a parasite known as toxoplasmosis harmful to humans and seals. USA TODAY, "Glowing rock fight, Statehouse stash, hometown hero: News from around our 50 states," 15 July 2019 Stanford University School of Medicine in Palo Alto, California, has fired a prominent researcher who studies the parasitic disease toxoplasmosis as well as chronic fatigue syndrome (CFS), citing unspecified behavioral violations. Meredith Wadman, Science | AAAS, "Chronic fatigue scientist fired after conduct complaints, Stanford says," 4 June 2019 Marine mammals also carry disease, from brucellosis to toxoplasmosis, which is the U.S.'s leading cause of death from foodborne illnesses. Craig Welch, National Geographic, "More people are eating marine animals—with deadly results," 22 May 2019 Pregnant people, in particular, should be especially aware of toxoplasmosis, an illness caused by the parasite Toxoplasma gondii. Carolyn L. Todd, SELF, "How Unsanitary Is It to Kiss Your Pet on the Mouth?," 2 May 2019 But Daraprim, which costs pennies to make and is used to treat the parasitic infection toxoplasmosis — which is rare in the United States — still retails for more than $750 per pill, according to drug website Shefali Luthra, Washington Post, "For Shame: ‘Pharma Bro’ Shkreli Is In Prison, But Daraprim’s Price Is Still High," 4 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'toxoplasmosis.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of toxoplasmosis

1926, in the meaning defined above

History and Etymology for toxoplasmosis

New Latin

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Time Traveler for toxoplasmosis

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The first known use of toxoplasmosis was in 1926

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Statistics for toxoplasmosis

Last Updated

1 Dec 2019

Cite this Entry

“Toxoplasmosis.” The Dictionary, Merriam-Webster Inc., Accessed 8 December 2019.

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More Definitions for toxoplasmosis


toxo·​plas·​mo·​sis | \ -ˌplaz-ˈmō-səs How to pronounce toxoplasmosis (audio) \
plural toxoplasmoses\ -​ˌsēz How to pronounce toxoplasmoses (audio) \

Medical Definition of toxoplasmosis

: infection with or disease caused by a sporozoan of the genus Toxoplasma (T. gondii) that invades the tissues and may seriously damage the central nervous system especially of infants

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to constrict the range or activity of

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