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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

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

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

In the early 1920s, Griffith, a medical officer at the British Ministry of Health, began to investigate a bacterium named Streptococcus pneumoniae or pneumococcus.

From "The Gene" by Siddhartha Mukherjee