salmonella

noun

sal·​mo·​nel·​la ˌsal-mə-ˈne-lə How to pronounce salmonella (audio)
plural salmonellae ˌsal-mə-ˈne-(ˌ)lē How to pronounce salmonella (audio)
-ˌlī
or salmonellas or salmonella
: any of a genus (Salmonella) of usually motile enterobacteria that are pathogenic for humans and other warm-blooded animals and cause food poisoning, gastrointestinal inflammation, typhoid fever, or septicemia

Examples of salmonella in a Sentence

Recent Examples on the Web
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Both agencies say that freezing eggs in their shells creates food safety risks, including potential exposure to salmonella. Hanna Wickes, Miami Herald, 24 Apr. 2026 As a result, contaminated eggs may lead to foodborne illness, including salmonella. Hanna Wickes, Charlotte Observer, 24 Apr. 2026 Some of the bacteria that have been detected on the ISS have evolved during their time in space, including salmonella that have become more virulent and acinetobacter pittii that developed resistance to antibiotics. Scott E. Solomon, STAT, 22 Apr. 2026 Studies of flies found on dairy farms and cattle ranches have shown that these insects are major spreaders of pathogens like salmonella, Moraxella bovis (pinkeye), and spreadable pathogens of bovine respiratory disease. Idaho Statesman, 16 Apr. 2026 See All Example Sentences for salmonella

Word History

Etymology

New Latin, from Daniel E. Salmon †1914 American veterinarian

First Known Use

1913, in the meaning defined above

Time Traveler
The first known use of salmonella was in 1913

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Cite this Entry

“Salmonella.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/salmonella. Accessed 28 Apr. 2026.

Kids Definition

salmonella

noun
sal·​mo·​nel·​la ˌsal-mə-ˈnel-ə How to pronounce salmonella (audio)
plural salmonellae -ˈnel-ē How to pronounce salmonella (audio)
-ˌī
or salmonellas or salmonella
: any of a genus of rod-shaped bacteria that cause various illnesses (as food poisoning) in human beings and other warm-blooded animals

Medical Definition

salmonella

noun
sal·​mo·​nel·​la ˌsal-mə-ˈnel-ə How to pronounce salmonella (audio)
1
capitalized : a genus of aerobic gram-negative rod-shaped nonspore-forming usually motile bacteria of the family Enterobacteriaceae that grow well on artificial media and form acid and gas on many carbohydrates but not on lactose, sucrose, or salicin, that are pathogenic for humans and other warm-blooded animals, and that cause food poisoning, acute gastrointestinal inflammation, typhoid fever, and septicemia
2
plural salmonellae -ˈnel-ē How to pronounce salmonella (audio) or salmonellas or salmonella : any bacterium of the genus Salmonella

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