pro·​to·​zo·​on ˌprō-tə-ˈzō-ˌän How to pronounce protozoon (audio)
plural protozoa ˌprō-tə-ˈzō-ə How to pronounce protozoon (audio)

Examples of protozoon in a Sentence

Recent Examples on the Web Where swamps were drained and highways laid, the potential of malaria was unlocked in its worst form – Plasmodium falciparum – a deadly mosquito-borne protozoon. Kyle Harper, Discover Magazine, 15 Dec. 2017

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'protozoon.' 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, from singular of Protozoa

First Known Use

circa 1853, in the meaning defined above

Time Traveler
The first known use of protozoon was circa 1853

Dictionary Entries Near protozoon

Cite this Entry

“Protozoon.” Dictionary, Merriam-Webster, Accessed 4 Dec. 2023.

Medical Definition


pro·​to·​zo·​on ˌprōt-ə-ˈzō-ˌän How to pronounce protozoon (audio)
plural protozoa
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