protozoan

noun
pro·​to·​zo·​an | \ ˌprō-tə-ˈzō-ən How to pronounce protozoan (audio) \

Definition of protozoan

: any of a phylum or subkingdom (Protozoa) of chiefly motile and heterotrophic unicellular protists (such as amoebas, trypanosomes, sporozoans, and paramecia) that are represented in almost every kind of habitat and include some pathogenic parasites of humans and domestic animals

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Other Words from protozoan

protozoan adjective

Examples of protozoan in a Sentence

Recent Examples on the Web Readers’ favorite item of the year was the ingenious LifeStraw portable water filter, which removes 99.9% of waterborne bacteria and protozoan parasites — sans iodine tablets or unwieldy purifiers. Julianne Ross, CNN Underscored, 28 Dec. 2020 The ultra-portable LifeStraw removes 99.9% of waterborne bacteria and protozoan parasites, no icky iodine taste or bulky contraptions required. Julianne Ross, CNN Underscored, 6 Nov. 2020 In vitro studies have shown that the drug—used primarily to treat helminth and protozoan infections—slows replication of SARS-CoV-2. Herton Escobar, Science | AAAS, 28 Oct. 2020 With claims to remove 99.9999% of waterborne bacteria and 99.9% of waterborne protozoan parasites and filter up to 0.2 microns, this little tool is super handy to have when on a hike, camping adventure or RV-trip. Nicole Briese, USA TODAY, 20 Oct. 2020 The portable filter removes 99.9% of waterborne bacteria and protozoan parasites — no bulky contraptions or icky iodine tablet taste required. Julianne Ross, CNN Underscored, 10 Sep. 2020 According to the company, this filter can decontaminate up to 1,000 gallons of water and remove up to 99.9999% of waterborne bacteria and 99.9% of waterborne protozoan parasites, plus nix up to .02 microns. Nicole Briese, USA TODAY, 3 Sep. 2020 The protozoan parasite is transmitted through the bite of a female mosquito. Peter Fimrite, SFChronicle.com, 9 July 2020 The disease is caused by the protozoan parasite Plasmodium, which often grows in the liver before infecting red blood cells. Uwagbale Edward-ekpu, Quartz Africa, 21 Mar. 2020

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

circa 1864, in the meaning defined above

History and Etymology for protozoan

New Latin Protozoa, from prot- + -zoa

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Time Traveler for protozoan

Time Traveler

The first known use of protozoan was circa 1864

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Dictionary Entries Near protozoan

protozoal

protozoan

protozoea

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Cite this Entry

“Protozoan.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/protozoan. Accessed 29 Jul. 2021.

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More Definitions for protozoan

protozoan

noun

English Language Learners Definition of protozoan

: a tiny organism whose body is a single cell

protozoan

noun
pro·​to·​zo·​an | \ ˌprō-tə-ˈzō-ən How to pronounce protozoan (audio) \

Kids Definition of protozoan

: a single-celled organism (as an amoeba or paramecium) that is a protist and is capable of movement

protozoan

noun
pro·​to·​zo·​an | \ -ˈzō-ən How to pronounce protozoan (audio) \

Medical Definition of protozoan

 (Entry 1 of 2)

: any protist of the phylum or subkingdom Protozoa

protozoan

adjective

Medical Definition of protozoan (Entry 2 of 2)

: of or relating to the phylum or subkingdom Protozoa

More from Merriam-Webster on protozoan

Nglish: Translation of protozoan for Spanish Speakers

Britannica.com: Encyclopedia article about protozoan

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