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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.

Flea-borne typhus is caused by the bacterium Rickettsia typhi.

From Los Angeles Times • Apr. 3, 2026

So a lot of the focus is on changes to the bacterium and whether people have less immunity.

From BBC • Mar. 27, 2026

Small mutations can have a big impact on the behaviour of the bacterium.

From BBC • Mar. 20, 2026

Experiments using mouse models and human breast cancer cells revealed how the bacterium affects tissue.

From Science Daily • Mar. 19, 2026

His cilia are not cilia at all, but individual spirochetes, and at the base of attachment of each spirochete is an oval organelle, embedded in the myxotricha membrane, which is a bacterium.

From "The Lives of a Cell" by Lewis Thomas