infected

adjective

in·​fect·​ed in-ˈfek-təd How to pronounce infected (audio)
: having an infection : contaminated with an infective agent (such as a bacterium or virus)
an infected wound
Through a number of different means, these viruses persist at very low, hard-to-detect levels in infected cells.The Journal of the American Medical Association
She explains that leptospirosis bacteria are shed in the urine of infected animals.Tania Banak
The fungus produces as many as 1 million conidia per square centimeter of infected leaf surface.G. B. Lucas

Examples of infected in a Sentence

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These structural changes had the overall effect of improving the ability of infected ants to isolate themselves, which Stroeymeyt had documented previously. NPR, 21 Oct. 2025 There are also antiviral treatments available for some infected people. Caroline Neal, Louisville Courier Journal, 21 Oct. 2025 It is spread through close contact with an infected person, such as through respiratory droplets from coughing or sneezing. Madison E. Goldberg, PEOPLE, 18 Oct. 2025 There’s a whole history, actually, of how the Pentagon responded to the epidemic within its ranks, first by imprisoning infected men. Jackson McHenry, Vulture, 17 Oct. 2025 See All Example Sentences for infected

Word History

Etymology

from past participle of infect

First Known Use

1534, in the meaning defined above

Time Traveler
The first known use of infected was in 1534

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Cite this Entry

“Infected.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/infected. Accessed 30 Oct. 2025.

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