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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

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

From BBC • Mar. 20, 2026

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

From BBC • Mar. 20, 2026

Even short exposure to the bacterium increased levels of a protein called PKcs, which was linked to greater cancer cell movement, invasion, stem-like traits, and resistance to chemotherapy.

From Science Daily • Mar. 19, 2026

Following work performed in Germany by others, he discovered that the bacterium came in two strains.

From "The Gene" by Siddhartha Mukherjee