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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.

The Plymouth Marine Laboratory has been using equipment including satellites and drones to monitor the waters, testing levels of viruses and bacteria, and looking at the numbers of different species of algae.

From BBC • Apr. 15, 2026

The sediment and nutrients from the winter stays in coastal waters throughout the year and can also contain high levels of bacteria and virus material.

From BBC • Apr. 15, 2026

Birds that spent more time together had more similar gut bacteria, especially anaerobic microbes that can only survive in low-oxygen conditions.

From Science Daily • Apr. 13, 2026

Such warnings are typical after rainfall, which can cause ocean and bay waters to become contaminated with bacteria, chemicals, trash, and other health hazards from city streets and mountain areas, the health department said.

From Los Angeles Times • Apr. 13, 2026

The worms and bacteria had eaten the rest.

From "The Pigman" by Paul Zindel




Vocabulary lists containing bacteria