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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.

Now, researchers from the University of Southern Denmark and Odense University Hospital have identified a previously unknown virus inside a common gut bacterium.

From Science Daily • Apr. 22, 2026

The key difference turned out to be a virus living inside the bacterium.

From Science Daily • Apr. 22, 2026

For years, researchers have linked one specific bacterium, Bacteroides fragilis, to colorectal cancer.

From Science Daily • Apr. 22, 2026

One lowly bacterium possesses a flagellum—a tiny tail or rotor.

From The Wall Street Journal • Apr. 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




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