toxo·​plas·​mo·​sis ˌtäk-sə-ˌplaz-ˈmō-səs How to pronounce toxoplasmosis (audio)
plural toxoplasmoses ˌtäk-sə-ˌplaz-ˈmō-ˌsēz How to pronounce toxoplasmosis (audio)
: 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 One environmental factor may be an infectious agent, such as the common parasite Toxoplasma gondii, which causes toxoplasmosis. Bill Sullivan, Discover Magazine, 2 Jan. 2024 Most people with latent toxoplasmosis show no obvious signs of disease despite having parasite cysts in their brain. Bill Sullivan, Discover Magazine, 2 Jan. 2024 Pregnant people are not supposed to change cat litter because of toxoplasmosis, an infection caused by a parasite found in cat feces; the risk of preterm birth or miscarriage is small but serious. Hazlitt, 30 Aug. 2023 Another line of research has focused on a potential link between toxoplasmosis and schizophrenia. Gustavo Arrizabalaga and Bill Sullivan, Scientific American, 1 Mar. 2015 If the heart donor has toxoplasmosis, Koomalsingh says, the medical team plans medications for the recipient after the operation. Christian Thorsberg, Discover Magazine, 14 Mar. 2022 The name might be obscure, but CMV is the leading infectious cause of birth defects in America—far ahead of toxoplasmosis from cat litter or microbes from hamsters. Sarah Zhang, The Atlantic, 13 June 2023 To prevent any toxoplasmosis infection, the CDC recommends typical food safety practices such as cooking foods to a high internal temperature, rinsing fruits and vegetables and washing utensils. Jamie Gumbrecht, CNN, 24 Mar. 2023 Unfortunately, toxoplasmosis is incurable. Grrlscientist, Forbes, 24 Jan. 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'toxoplasmosis.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


New Latin

First Known Use

1926, in the meaning defined above

Time Traveler
The first known use of toxoplasmosis was in 1926

Dictionary Entries Near toxoplasmosis

Cite this Entry

“Toxoplasmosis.” Dictionary, Merriam-Webster, Accessed 23 Feb. 2024.

Medical Definition


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

More from Merriam-Webster on toxoplasmosis

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