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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.

“There’s no pathogenic bacteria correlating us to anybody,” said McAfee.

From Los Angeles Times • Apr. 2, 2026

Raw, or unpasteurized, dairy has not undergone the heating process that kills harmful bacteria while leaving nutrients largely intact.

From Los Angeles Times • Apr. 2, 2026

At the same time, about one in four urine samples tested in NHS laboratories contains bacteria that are resistant to commonly used antibiotics.

From Science Daily • Mar. 31, 2026

If bacteria stop growing, the antibiotic in that tube is effective.

From Science Daily • Mar. 31, 2026

Avery fiddled with the experiment as only a microbiologist could, growing the bacteria in various cultures, adding beef-heart broth, removing contaminant sugars, and growing the colonies on plates.

From "The Gene" by Siddhartha Mukherjee