bacterial

adjective

bac·​te·​ri·​al bak-ˈtir-ē-əl How to pronounce bacterial (audio)
: of, relating to, or caused by bacteria
bacterial infection
bacterially adverb

Examples of bacterial in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The scientists studied how 1,076 chemical contaminants affected 22 bacterial species, creating a machine-learning model to forecast how likely chemicals were to harm gut health. Andrea Margolis, FOXNews.com, 5 Dec. 2025 Once your tree end is trimmed and back in water, your goal is to keep the water available and slow the eventual bacterial clogging of the tree’s arteries. Paul Cappiello, Louisville Courier Journal, 5 Dec. 2025 Still, the company warned customers that the bacteria can cause Salmonellosis, the most common form of bacterial food poisoning in the United States. Moná Thomas, PEOPLE, 4 Dec. 2025 After that, bacterial growth becomes more likely. Jill Schildhouse, Southern Living, 28 Nov. 2025 See All Example Sentences for bacterial

Word History

First Known Use

1869, in the meaning defined above

Time Traveler
The first known use of bacterial was in 1869

Browse Nearby Words

Cite this Entry

“Bacterial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bacterial. Accessed 15 Dec. 2025.

Kids Definition

bacterial

adjective
bac·​te·​ri·​al bak-ˈtir-ē-əl How to pronounce bacterial (audio)
: of, relating to, or caused by bacteria

Medical Definition

bacterial

adjective
bac·​te·​ri·​al bak-ˈtir-ē-əl How to pronounce bacterial (audio)
: of, relating to, or caused by bacteria
a bacterial chromosome
bacterial infection
bacterial endocarditis
bacterially adverb

More from Merriam-Webster on bacterial

Last Updated: - Updated example sentences
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