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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Measles spreads through the air when an infected person coughs or sneezes, according to the news release from the health department, and can linger in a space for up to two hours. Aurora Beacon-News, Chicago Tribune, 1 Apr. 2026 It is spread through close contact with an infected person, such as through respiratory droplets from coughing or sneezing. Vanessa Etienne, PEOPLE, 1 Apr. 2026 It is spread through airborne particles released when an infected person coughs, speaks or sneezes. Melissa Rudy, FOXNews.com, 29 Mar. 2026 It can also be passed from one person to another four days before an infected person shows signs of having it. Katie Silver, NPR, 28 Mar. 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 5 Apr. 2026.

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