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.
According to the Centers for Disease Control and Prevention (CDC), listeria poisoning is a foodborne bacterial infection typically caused by the bacterium Listeria monocytogenes. Fernando Cervantes Jr, USA Today, 7 Nov. 2025 Watson became mesmerized with the three-dimensional structures of molecules from his bacterial virus research at the university. Christina Zdanowicz, CNN Money, 7 Nov. 2025 Raw honey also contains compounds called flavonoids, which have antioxidant activity, as well as enzymes that prevent bacterial growth. Angela Ryan Lee, Verywell Health, 6 Nov. 2025 One of the hurdles in tackling the epidemic has been a global shortage of radiologists to diagnose this bacterial infection that usually affects the lungs. NPR, 6 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

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Cite this Entry

“Bacterial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bacterial. Accessed 14 Nov. 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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