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pathogen

noun

path·​o·​gen ˈpa-thə-jən How to pronounce pathogen (audio)
: a specific causative agent (such as a bacterium or virus) of disease

Examples of pathogen 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 company swabbed patients for COVID-19, and the lab conducted respiratory pathogen panels that were not medically necessary on these specimens and billed Medicare. Jade Jackson, IndyStar, 25 Nov. 2025 Regular Yogurt Making regular yogurt begins with heating fresh milk to kill any potentially harmful pathogens. Chelsea Rae Bourgeois, Health, 21 Nov. 2025 Their model showed that the device removed up to 94 per cent of airborne pathogens. Aamir Khollam, Interesting Engineering, 21 Nov. 2025 Many people recover within 24 hours, but some can become very ill, depending on the pathogen and their underlying medical conditions. Katia Hetter, CNN Money, 20 Nov. 2025 See All Example Sentences for pathogen

Word History

Etymology

patho- + -gen, after pathogenic, pathogenesis

First Known Use

1880, in the meaning defined above

Time Traveler
The first known use of pathogen was in 1880

Browse Nearby Words

Cite this Entry

“Pathogen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pathogen. Accessed 29 Nov. 2025.

Kids Definition

pathogen

noun
patho·​gen
ˈpath-ə-jən
: a germ (as a bacterium or virus) that causes disease

Medical Definition

pathogen

noun
patho·​gen ˈpath-ə-jən How to pronounce pathogen (audio)
: a specific causative agent (as a bacterium or virus) of disease

More from Merriam-Webster on pathogen

Last Updated: - Updated example sentences
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