microorganism
noun
mi·cro·or·gan·ism
ˌmī-krō-ˈȯr-gə-ˌni-zəm 
: an organism (such as a bacterium or protozoan) of microscopic or ultramicroscopic size
Examples of microorganism in a Sentence
Recent Examples on the Web
Probiotics are live microorganisms found in some foods and supplements.
—
Amber J. Tresca, Verywell Health, 1 Jan. 2025
During fermentation, natural enzymes and microorganisms break down the sugars and proteins in the mucilage, modifying the beans’ acidity, sweetness, and overall flavor profile.
—Joseph V Micallef, Forbes, 31 Dec. 2024
Healthy soil has microorganisms and fungi that help plants grow and thrive but using herbicides has the opposite effect.
—Lauren David, Southern Living, 27 Dec. 2024
None are particularly easy to maintain: The Environmental Protection Agency advises cleaning a humidifier every three days, which requires taking it apart and getting into every little crevice to remove grime, and emptying the tank daily to reduce the growth of microorganisms.
—Whizy Kim, Vox, 20 Dec. 2024
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Amber J. Tresca, Verywell Health, 1 Jan. 2025
During fermentation, natural enzymes and microorganisms break down the sugars and proteins in the mucilage, modifying the beans’ acidity, sweetness, and overall flavor profile.
—Joseph V Micallef, Forbes, 31 Dec. 2024
Healthy soil has microorganisms and fungi that help plants grow and thrive but using herbicides has the opposite effect.
—Lauren David, Southern Living, 27 Dec. 2024
None are particularly easy to maintain: The Environmental Protection Agency advises cleaning a humidifier every three days, which requires taking it apart and getting into every little crevice to remove grime, and emptying the tank daily to reduce the growth of microorganisms.
—Whizy Kim, Vox, 20 Dec. 2024
See all Example Sentences for microorganism
Dictionary Entries Near microorganism
Cite this Entry
“Microorganism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/microorganism. Accessed 20 Jan. 2025.
Copy CitationKids Definition
microorganism
noun
mi·cro·or·gan·ism
ˌmī-krō-ˈȯr-gə-ˌniz-əm
: 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
: an organism of microscopic or ultramicroscopic size
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