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Definitions

bacteria

[bak-teer-ee-uh] / bækˈtɪər i ə /
NOUN
microorganisms
Synonyms


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.

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University students are particularly at risk because they mix with lots of new people, and the bacteria that causes meningitis is spread in similar ways to the common cold through sneezing and coughing.

From BBC Jul. 19, 2026

Driving the interest are several fast-proliferating chains that offer probiotic-rich yogurts made with cultured milks that contain healthy bacteria.

From The Wall Street Journal Jul. 19, 2026

Inside drinking water distribution systems, however, they can pose a risk because some of the bacteria they contain may cause disease.

From Science Daily Jul. 17, 2026

Foodborne disease outbreaks caused by viruses, bacteria like E. coli, or microscopic parasites like Cyclospora are fairly regular occurrences.

From Slate Jul. 17, 2026

Oxygen and nutrients can cross the blood-brain barrier, but many dangerous substances like bacteria cannot.

From "Phineas Gage" by John Fleischman

This allowed them to identify traces of several pathogens, including Yersinia pestis, the bacterium responsible for plague, and Borrelia recurrentis, which causes louse borne relapsing fever.

From Science Daily Jul. 8, 2026

The New York company said in a statement that so far its product had not tested positive for the bacterium Clostridium botulinum.

From Los Angeles Times Jun. 14, 2026

Zucchello’s business relied on trade routes spanning from the Black Sea to Crete to Alexandria—the very networks that would spread the plague bacterium.

From The Wall Street Journal Jun. 12, 2026

A research team led by Drs. Se Hee Lee and Tae Woong Whon at WiKim focused on a kimchi-derived bacterium called Leuconostoc mesenteroides CBA3656.

From Science Daily May 18, 2026

By some standards, it is about as smart as a grasshopper; by others, only as intelligent as a bacterium.

From "Cosmos" by Carl Sagan




Vocabulary lists containing bacteria


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