microorganism

noun

mi·​cro·​or·​gan·​ism ˌmī-krō-ˈȯr-gə-ˌni-zəm How to pronounce microorganism (audio)
: an organism (such as a bacterium or protozoan) of microscopic or ultramicroscopic size

Examples of microorganism in a Sentence

Recent Examples on the Web This reduces the total number of microorganisms in the product and also inactivates enzymes that could contribute to spoilage. Juan Silva, Discover Magazine, 21 June 2024 Plus, the exoskeleton of a cicada is chitin-rich, which is good for microorganisms in the ground and naturally enriches your soil. Christianna Silva, Better Homes & Gardens, 20 June 2024 Gut bacteria coexist with viruses and fungi, and collectively these are referred to as microorganisms, also called microbes. Bryant Stamford, The Courier-Journal, 20 June 2024 And research shows that this solution is gentle enough to use directly on your face to get rid of the little microorganisms responsible for your breakouts. Jenna Ryu, SELF, 13 June 2024 See all Example Sentences for microorganism 

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

Word History

Etymology

International Scientific Vocabulary

First Known Use

1880, in the meaning defined above

Time Traveler
The first known use of microorganism was in 1880

Dictionary Entries Near microorganism

Cite this Entry

“Microorganism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/microorganism. Accessed 1 Jul. 2024.

Kids Definition

microorganism

noun
mi·​cro·​or·​gan·​ism ˌmī-krō-ˈȯr-gə-ˌniz-əm How to pronounce microorganism (audio)
: an organism (as a bacterium) of microscopic or less than microscopic size

Medical Definition

microorganism

noun
mi·​cro·​or·​gan·​ism -ˈȯr-gə-ˌniz-əm How to pronounce microorganism (audio)
: an organism of microscopic or ultramicroscopic size

More from Merriam-Webster on microorganism

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