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microorganisms

Cultural

Organisms so small that they can be seen only through a microscope. (See bacteria, protozoa, and viruses.)

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

They've experimented with different microorganisms to minimise off-flavours and maximise desirable flavour compounds such as umami or sweetness.

From BBC • Jun. 4, 2026

With that data, MOA has trained an AI to work out what combinations of substrates and microorganisms would achieve the best yields.

From BBC • Jun. 4, 2026

They are produced by microorganisms such as cyanobacteria, which release oxygen through photosynthesis.

From Science Daily • May 22, 2026

Phosphorus-removing microorganisms are less effective when it’s hot, making summer a stress test for CREW’s system.

From The Wall Street Journal • May 14, 2026

Special soil microorganisms are also likely to play a role in its persistent fertility.

From "1491" by Charles C. Mann

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023