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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

An initial genetic analysis of the bacterium causing the outbreak was concluded on Thursday.

From BBC • Mar. 20, 2026

Does the explanation for its scale and speed lie solely in the bacterium itself or did other factors play a role?

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

Provided that each victim thereby infects on the average more than one new victim, the bacterium will spread, even though the first host happens to die.

From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond