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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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These bacteria are less abundant in people with IBD.

From Science Daily Sep. 13, 2026

“The first cleanser removes sweat, sunscreen, deodorant, excess oil, and odor-causing bacteria and the second provides another level of cleansing while restoring moisture, supporting the skin barrier or delivering an active ingredient,” Gohara said.

From The Wall Street Journal Sep. 11, 2026

Public health officials across Los Angeles County also urge people to avoid swimming in the ocean through Wednesday because of potential bacteria spikes from rain Sunday and Monday.

From Los Angeles Times Sep. 8, 2026

Across Los Angeles County, public health officials urged beachgoers to avoid swimming in the ocean through Wednesday because of potential bacteria spikes from the rain.

From Los Angeles Times Sep. 7, 2026

Chicago’s water teemed with bacteria, thanks mainly to the Chicago River.

From "The Devil in the White City" by Erik Larson

The images showed the archaeon and bacterium physically connected by bacterial nanotubes.

From Science Daily Sep. 3, 2026

In a study published in Science Advances, the team used BifidoSumIL-2, an engineered strain of Bifidobacterium longum, a probiotic bacterium naturally found in the gut, to carry an immune-stimulating treatment directly into tumors.

From Science Daily Aug. 19, 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

They used HeLa to test the effects of steroids, chemotherapy drugs, hormones, vitamins, and environmental stress; they infected them with tuberculosis, salmonella, and the bacterium that causes vaginitis.

From "The Immortal Life of Henrietta Lacks" by Rebecca Skloot




Vocabulary lists containing bacteria


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