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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.

The findings suggest that gut bacteria act as an environmental trigger, influencing whether the disease develops in genetically at-risk individuals.

From Science Daily • Apr. 9, 2026

Using machine learning, they created the first detailed catalogue of all human gut bacteria at a level precise enough to reveal how different microbial subgroups function in the body.

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

This structure, known as the type 6 secretion system, or T6SS, helps the bacteria compete with other microbes and dominate the gut.

From Science Daily • Apr. 7, 2026

He suspected that bacteria entered wounds through a surgeon's dirty hands and instruments.

From "Ambushed!" by Gail Jarrow




Vocabulary lists containing bacteria