fomite

noun

fo·​mite ˈfō-ˌmīt How to pronounce fomite (audio)
: an object (such as a dish, doorknob, or article of clothing) that may be contaminated with infectious agents (such as bacteria or viruses) and serve in their transmission

Did you know?

"Disinfectant on your hands keeps us healthier and fomites no longer foment as much disease." Australian newspaper contributor Peter Goers was likely going for alliteration when he paired up fomite and foment, a verb meaning "to promote the growth or development of"—but, whether he realized it or not, the words fomite and foment are related. Fomite is a back-formation of fomites, the Latin plural of fomes, itself a word for "tinder." (Much like tinder is a catalyst of fire, a fomite can kindle disease.) Fomes is related to the Latin verb fovēre ("to heat"), an ancestor of foment.

Examples of fomite 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.
Some potential causes include polluted fertilizers and fomites at the packing facilities, while there are many plausible explanations. Jasmine Laws, MSNBC Newsweek, 29 May 2025 In emails, Mid-Michigan health officials hypothesized that the cats acquired the virus from droplets, known as fomites, on their owners’ hands or clothing. Tribune News Service, The Mercury News, 29 Oct. 2024 Hand contacts with fomites and mucous membranes are a potentially dangerous combination. Sabrina Sholts, Smithsonian Magazine, 12 Mar. 2024 Contracting mpox through indirect contact with fomites, including clothes, bed linens and towels, is low. Noor Adatia, Dallas News, 1 June 2023

Word History

Etymology

back-formation from fomites, from New Latin, plural of fomit-, fomes, from Latin, kindling wood; akin to Latin fovēre to heat — more at foment

First Known Use

1803, in the meaning defined above

Time Traveler
The first known use of fomite was in 1803

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Cite this Entry

“Fomite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fomite. Accessed 6 Jul. 2026.

Medical Definition

fomite

noun
fo·​mite ˈfō-ˌmīt How to pronounce fomite (audio)
: an object (as a dish, toy, book, doorknob, or article of clothing) that may be contaminated with infectious agents (as bacteria or viruses) and serve in their transmission
the much maligned toilet seat is a remarkably ineffective fomiteM. F. Rein
what are the most common fomites for rotavirus in day-care settingsPediatric Report's Child Health Newsletter

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