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Definitions

bacterium

[bak-teer-ee-uhm] / bækˈtɪər i əm /






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

From Science Daily Sep. 3, 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

This bacterium produces propionic acid, a compound associated with anti-inflammatory properties, reduced cholesterol synthesis, and appetite regulation.

From Science Daily Aug. 17, 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

How could heat-killed bacterial debris—no more than a lukewarm soup of microbial chemicals—have transmitted a genetic trait to a live bacterium by mere contact?

From "The Gene" by Siddhartha Mukherjee

Because the bacteria were no longer alive, they could not cause an infection, but they still triggered a temporary inflammatory response.

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

Like Griffith, Avery observed that the smooth-coated bacteria, once transformed, retained their virulence generation upon generation.

From "The Gene" by Siddhartha Mukherjee




Vocabulary lists containing bacterium


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