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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.

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When bacteria are repeatedly exposed to antibiotics, strains that can survive the drugs may spread, making infections more difficult to treat.

From Science Daily Aug. 30, 2026

Potable water is water that is free of harmful bacteria and chemicals and is considered safe to drink and cook with.

From BBC Aug. 29, 2026

Some of the cases date back a year, but all involve bacteria that are almost genetically identical, suggesting a common food source.

From BBC Aug. 27, 2026

"I would have expected these microbes to have dried out," said Regberg, who studies space station bacteria and was a co-author on the paper.

From Science Daily Aug. 25, 2026

They don't realize that floating in the air on dust particles, lurking on fingertips, or growing on the shiny steel blades of their unwashed surgical scalpels are single-celled bacteria and other microscopic life forms.

From "Phineas Gage" by John Fleischman

One long-standing idea in biology proposes that the first eukaryotic cell developed through an intimate partnership between an ancient archaeon and a bacterium.

From Science Daily Sep. 3, 2026

Among the older participants, those with detectable levels of R inulinivorans had 29% greater handgrip strength than those in whom the bacterium could not be detected.

From Science Daily Aug. 22, 2026

It is more unusual to see an outbreak like this linked to one specific stain of the bacterium affecting many people at one time.

From BBC Aug. 18, 2026

Just this month, tularemia, also known as rabbit fever and caused by a bacterium in ticks and deer flies, was detected in people living on Long Island.

From Los Angeles Times Aug. 16, 2026

Bruno Latour maintained that the fact that the bacterium that causes tuberculosis has been discovered in the lungs of an ancient Egyptian pharaoh, Ramses II, did not mean that Ramses died of tuberculosis.

From "The Invention of Science" by David Wootton




Vocabulary lists containing bacteria


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