microorganisms

Cultural  

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

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Example Sentences

Using that tech, MOA Foodtech discovered the best microorganisms to make use of the leftover starch and fibre in the pea protein industry.

From BBC • Jun. 4, 2026

This involves genetically engineering microorganisms, such as moulds, to produce a specific material in a fermentation process.

From BBC • Jun. 4, 2026

A sewage plant is basically a farm for microorganisms that break down poop, releasing carbon dioxide in the process.

From The Wall Street Journal • May 14, 2026

The collective term for all microorganisms -- including bacteria, viruses and fungi -- that live in and on the body.

From Science Daily • Apr. 22, 2026

One of the first to envision such use of microorganisms was the 19th-century zoologist Elie Metchnikoff.

From "Silent Spring" by Rachel Carson