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toxoplasmosis

American  
[tok-soh-plaz-moh-sis] / ˌtɒk soʊ plæzˈmoʊ sɪs /

noun

Pathology.
  1. infection with the parasite Toxoplasma gondii, transmitted to humans by consumption of insufficiently cooked meat containing the parasite or by contact with contaminated cats or their feces: the illness produced is usually mild, but in pregnant women may damage the fetus.


toxoplasmosis British  
/ ˌtɒksəʊplæzˈməʊsɪs /

noun

  1. a protozoal disease characterized by jaundice, enlarged liver and spleen, and convulsions, caused by infection with Toxoplasma gondii

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

toxoplasmosis Scientific  
/ tŏk′sō-plăz-mōsĭs /
  1. An infectious disease caused by the protozoan Toxoplasma gondii that can be transmitted by infected humans and animals, especially cats, often by contact with feces. Toxoplasmosis can be a mild illness with fever and swollen lymph nodes, or progress to severe damage to the liver, heart, lungs, and brain. Fetuses that become infected during pregnancy may have congenital blindness and brain damage.


Other Word Forms

  • toxoplasmic adjective

Etymology

Origin of toxoplasmosis

1925–30; < New Latin Toxoplasm ( a ) ( toxoplasma ) + -osis

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Congenital toxoplasmosis remains a serious concern when infection occurs for the first time during pregnancy, as it can result in severe fetal complications.

From Science Daily • Jan. 27, 2026

Carr falls down stairs, eats a poisoned meal and contracts toxoplasmosis, which the show jokes could threaten his “freedom of speech.”

From Salon • Sep. 25, 2025

The strain of Toxoplasma gondii, the single-celled parasite that causes the disease toxoplasmosis, has never been recorded before in the U.S., is unusually virulent, and could pose a threat to other mammals—including people.

From National Geographic • May 31, 2023

It also cited the threat to nene from toxoplasmosis, a parasitic disease spread by cat feces.

From Seattle Times • Apr. 19, 2023

What’s so odd is that even with Frida and the toxoplasmosis and this man who should terrify me for so many reasons, I feel more at home than I have anywhere for so long.

From "I'll Give You the Sun" by Jandy Nelson