listeria

noun

lis·​te·​ria li-ˈstir-ē-ə 

plural listeria

: any of a genus (Listeria) of small, gram-positive, rod-shaped bacteria that do not form spores and have a tendency to grow in chains and that include one (Listeria monocytogenes) that causes listeriosis

A common germ found in many foods from raw vegetables to hot dogs, listeria can cause a sometimes fatal disease called listeriosis when present in large quantities.

—Amy Barrett

also : a disease or sickness caused by infection with this bacterium : listeriosis

Listeria symptoms include high fever, severe headache, stiffness, nausea, abdominal pain and diarrhea.

—Sierra Brown

Examples of listeria in a Sentence

Recent Examples on the Web

What are the symptoms of listeria infection? Symptoms, which start within two weeks after eating contaminated foods, include fever, muscle aches, tiredness. —Binghui Huang, The Indianapolis Star, 17 Aug. 2024

On July 29, the USDA confirmed that Boar’s Head liverwurst product tested positive for the same strain of listeria monocytogenes involved in the outbreak. —Bruce Gil, Quartz, 9 Aug. 2024

Asking Eric News Health 1 of 2 This image released by the Food Safety and Inspection Service, an agency of the United States Department of Agriculture, shows the product label for Boar’s Head Virginia Ham meat, one of 71 products recalled as an investigation into a deadly listeria outbreak. —Devna Bose, Chicago Tribune, 8 Aug. 2024

Symptoms of listeria infection The CDC says symptoms of listeria infection can be different depending on the person and part of the body affected. —Susan Selasky, Detroit Free Press, 31 July 2024

Word History

Etymology

New Latin, from Listeria, from Joseph Lister

First Known Use

1952, in the meaning defined above

Medical Definition

listeria

noun

lis·​te·​ria lis-ˈtir-ē-ə 

1

capitalized : a genus of small gram-positive flagellated rod-shaped bacteria that do not form spores, are aerobic or facultatively anaerobic, and have a tendency to grow in chains and that include one (L. monocytogenes) causing listeriosis

2

: any bacterium of the genus Listeria

called also listerella

listerial

lis-ˈtir-ē-əl 

adjective

listeric

-ik 

adjective