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Definitions

bacteria

[bak-teer-ee-uh] / bækˈtɪər i ə /
NOUN
microorganisms
Synonyms


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.

So I got a small grant, bought a swab kit and spent a semester knocking on doors to ask classmates if I could sample the bacteria on their faces.

From The Wall Street Journal • Apr. 17, 2026

The products on our bathroom shelves, marketed as clean, stripped away essential bacteria.

From The Wall Street Journal • Apr. 17, 2026

Certain bacteria produce methane as they break down organic material, but this only happens when phosphate, an essential nutrient, is in short supply.

From Science Daily • Apr. 16, 2026

The Plymouth Marine Laboratory has been using equipment including satellites and drones to monitor the waters, testing levels of viruses and bacteria, and looking at the numbers of different species of algae.

From BBC • Apr. 15, 2026

From bacteria to elephants—from red-eyed flies to blue-blooded princes—biological information flowed through living systems in a systematic, archetypal manner: DNA provided instructions to build RNA.

From "The Gene" by Siddhartha Mukherjee




Vocabulary lists containing bacteria