pathogenic

adjective

path·​o·​gen·​ic ˌpa-thə-ˈje-nik How to pronounce pathogenic (audio)
Synonyms of pathogenicnext
1
2
: causing or capable of causing disease
pathogenicity noun

Examples of pathogenic 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.
Threats to the environment and wildlife are still ever-present — a new highly pathogenic avian influenza has just hit the state, McGuire said, making birds and now elephant seals in Northern California sick. Laylan Connelly, Oc Register, 9 Mar. 2026 Highly pathogenic avian influenza hit the north central Iowa flock of about 35 birds Wednesday, March 4, the department said. Donnelle Eller, Des Moines Register, 5 Mar. 2026 Lake Katherine experienced an outbreak of highly pathogenic H5N1 in February 2025. Mikayla Price, CBS News, 3 Mar. 2026 Although tests are still pending, officials say the deaths were likely caused by highly pathogenic avian influenza (HPAI), more commonly known as bird flu, which is a respiratory disease of birds caused by influenza A viruses. Melissa Rudy, FOXNews.com, 19 Feb. 2026 See All Example Sentences for pathogenic

Word History

Etymology

patho- + -genic, after French pathogénique, German pathogenisch

First Known Use

1850, in the meaning defined at sense 1

Time Traveler
The first known use of pathogenic was in 1850

Browse Nearby Words

Cite this Entry

“Pathogenic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pathogenic. Accessed 13 Mar. 2026.

Kids Definition

pathogenic

adjective
patho·​gen·​ic
ˌpath-ə-ˈjen-ik
: causing or capable of causing disease

Medical Definition

pathogenic

adjective
patho·​gen·​ic -ˈjen-ik How to pronounce pathogenic (audio)
1
2
: causing or capable of causing disease
pathogenic microorganisms
pathogenically adverb

More from Merriam-Webster on pathogenic

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