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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

Scientists used germ-free mouse models, which are raised in completely sterile conditions without any bacteria.

From Science Daily • Apr. 9, 2026

In contrast, diets rich in dairy proteins and wheat gluten almost completely prevented the bacteria from establishing itself in the gut.

From Science Daily • Apr. 7, 2026

Instead, it comes from certain foods and from bacteria living in the gut.

From Science Daily • Apr. 7, 2026

Other family members were most likely the carriers of the bacteria that had infected him.

From "Mountains Beyond Mountains" by Tracy Kidder and Michael French




Vocabulary lists containing bacteria