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
Identifying the type of bacteria or other microorganism causing the infection can help ensure patients are treated quickly with the appropriate antibiotics.
—
Deidre McPhillips, CNN, 24 July 2024
This thought-provoking read explores the idea that the living creatures on Earth—humans, animals, plants, microorganisms—aren’t just products of evolutionary processes over millions of years, but rather participants in their own evolution.
—Cheri Lucas Rowlands, Longreads, 9 July 2024
Shipwrecks can attract microorganisms and small creatures like sponges and corals.
—Emilie Le Beau Lucchesi, Discover Magazine, 8 July 2024
Davey Jones, professor of environmental science and public health at Bangor University, told BBC Science Focus the river, which hosted the triathlon and swimming marathon events, is replete with odious microorganisms like bacteria and viruses.
—Sasha Rogelberg, Fortune Europe, 8 Aug. 2024
See all Example Sentences for microorganism 
Deidre McPhillips, CNN, 24 July 2024
This thought-provoking read explores the idea that the living creatures on Earth—humans, animals, plants, microorganisms—aren’t just products of evolutionary processes over millions of years, but rather participants in their own evolution.
—Cheri Lucas Rowlands, Longreads, 9 July 2024
Shipwrecks can attract microorganisms and small creatures like sponges and corals.
—Emilie Le Beau Lucchesi, Discover Magazine, 8 July 2024
Davey Jones, professor of environmental science and public health at Bangor University, told BBC Science Focus the river, which hosted the triathlon and swimming marathon events, is replete with odious microorganisms like bacteria and viruses.
—Sasha Rogelberg, Fortune Europe, 8 Aug. 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.
Dictionary Entries Near microorganism
Cite this Entry
“Microorganism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/microorganism. Accessed 17 Sep. 2024.
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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