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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.

Their work points to an unexpected player in disease progression: gut bacteria.

From Science Daily • Apr. 9, 2026

They interfere with a tiny, syringe-like structure on the surface of cholera bacteria that is used to inject toxins into nearby cells.

From Science Daily • Apr. 7, 2026

There is also concern about the overuse of antibiotics, which can lead to drug-resistant bacteria.

From Science Daily • Apr. 7, 2026

When this system is suppressed, cholera struggles to kill competing bacteria and cannot easily take over the intestinal environment.

From Science Daily • Apr. 7, 2026

Sometimes they live inside each other; the Bdellovibrio penetrate the walls of other bacteria, tuck themselves up inside, replicate, and burst out again as though they thought themselves phages.

From "The Lives of a Cell" by Lewis Thomas