cryp·​to·​spo·​rid·​i·​um | \ ˌkrip-tō-spȯr-ˈi-dē-əm How to pronounce cryptosporidium (audio) \
plural cryptosporidia\ ˌkrip-​tō-​spȯr-​ˈi-​dē-​ə How to pronounce cryptosporidium (audio) \

Definition of cryptosporidium

: any of a genus (Cryptosporidium of the order Coccidia) of protozoans parasitic in the gut of vertebrates including humans and sometimes causing diarrhea

Examples of cryptosporidium in a Sentence

Recent Examples on the Web Giardia and cryptosporidium are two other intestinal parasites that are actually not uncommon in the U.S., both of which are microscopic parasites that wouldn't cause worms but could cause diarrhea and other GI symptoms, says Dr. Sears. Casey Gueren, SELF, 19 Aug. 2021 If you have been diagnosed with cryptosporidium, don't go back in the water until two weeks after diarrhea has completely stopped. Rachel Trent, CNN, 3 July 2021 Olympic National Park recommends you either boil or filter water before drinking it (treating the coastal water sources with iodine or chlorine will not kill the cryptosporidium). oregonlive, 23 June 2021 According to the specs, the 0.1-micron absolute filtration removes 99.99999% of all bacteria (salmonella, leptospirosis, cholera, E.coli, and more) and protozoa, such as giardia and cryptosporidium. Danielle Bernabe, Fortune, 29 May 2021 Johnson reached out to a microbiologist named Tim Stinear, who was working for the state water-testing laboratory, developing techniques to amplify and detect the DNA of pathogens such as giardia and cryptosporidium. Brendan Borrell, The Atlantic, 3 July 2020 Raw, unpasteurized milk can harbor germs like listeria, salmonella, campylobacter or cryptosporidium. Rachel Meltzer Warren, New York Times, 17 Apr. 2020 The water bureau’s current plans for the plant in technology to remove cryptosporidium from the drinking water, two pipelines going to and from the facility, a daily capacity of 145 million gallons of water per day. oregonlive, 27 Nov. 2019 The city wants to have the new water treatment plant operational by 2027 in order to comply with federal drinking water regulations to filter out the parasite cryptosporidium and other contaminates. oregonlive, 27 Nov. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cryptosporidium.' 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 cryptosporidium

1910, in the meaning defined above

History and Etymology for cryptosporidium

borrowed from New Latin, genus name, from crypto- crypto- + sporidium "small spore," from spora spore entry 1 + -idium -idium

Note: Taxon introduced by the American physician and parasitologist Ernest E. Tyzzer (1875-1965) in "A sporozoan found in the peptic glands of the common mouse," Proceedings of the Society for Experimental Biology and Medicine, vol. 5 (1907-08), pp. 12-13.

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The first known use of cryptosporidium was in 1910

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Last Updated

29 Aug 2021

Cite this Entry

“Cryptosporidium.” Dictionary, Merriam-Webster, Accessed 17 Sep. 2021.

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More Definitions for cryptosporidium


cryp·​to·​spo·​rid·​i·​um | \ ˌkrip-tō-spȯr-ˈid-ē-əm How to pronounce cryptosporidium (audio) \

Medical Definition of cryptosporidium

1 capitalized : a genus of protozoans of the order Coccidia that are parasitic in the gut of many vertebrates including humans and that sometimes cause diarrhea especially in individuals who are immunocompromised (as in AIDS)
2 plural cryptosporidia\ -​ē-​ə How to pronounce cryptosporidium (audio) \ : any protozoan of the genus Cryptosporidium


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