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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.

The most widespread pathogen was the bacterium Salmonella enterica, which appeared in 63% of the snakes.

From Science Daily • May 26, 2026

One bacterium in particular, Morganella morganii, has been linked in several studies to major depressive disorder.

From Science Daily • Apr. 25, 2026

Earlier research in the series focused mainly on Yersinia pestis, the bacterium responsible for plague.

From Science Daily • Apr. 23, 2026

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

From Science Daily • Apr. 22, 2026

How might a bacterium even “know,” or sense, that the sugar source had been switched?

From "The Gene" by Siddhartha Mukherjee




Vocabulary lists containing bacterium


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