infected

adjective

in·​fect·​ed in-ˈfek-təd How to pronounce infected (audio)
Synonyms of infectednext
: 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

Recent Examples on the Web
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Further, the virus can remain infectious in the air for hours after an infected person had been there. Judy Stone, Forbes.com, 21 Jan. 2026 To treat the fungus, Lalicata's advice is to prune off infected leaves. Leanne Potts, Better Homes & Gardens, 20 Jan. 2026 That may be an undercount because infected people can spread the virus up to four days before symptoms appear, giving each sick individual the potential to infect a dozen more people, LaCroix said. Erika Edwards, NBC news, 19 Jan. 2026 Measles is highly contagious, spreading through the air when a person who is infected coughs, sneezes, breathes, or talks. Eduardo Cuevas, USA Today, 19 Jan. 2026 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 23 Jan. 2026.

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