infection

noun
in·​fec·​tion | \ in-ˈfek-shən How to pronounce infection (audio) \

Definition of infection

1 : the act or result of affecting injuriously
2 : an infective agent or material contaminated with an infective agent
3a : the state produced by the establishment of a pathogenic agent (such as a bacterium or virus) in or on a suitable host an infection in his foot
b : a disease resulting from infection contagious infections infections of childhood
4 : an act or process of infecting also : the establishment of a pathogen in its host after invasion
5 : the communication of emotions or qualities through example or contact

Examples of infection in a Sentence

Poor hygiene can increase the danger of infection. The wound has so far remained free of infection. steps you can take to decrease your computer's risk of infection
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Recent Examples on the Web

The only region to see a falling infection rate in 2017 was the Western Pacific (including Cambodia, Fiji, Micronesia, and others), while Europe saw rates more than quadruple, and in the Americas, rates were more than 64 times higher. Cathleen O'grady, Ars Technica, "The fight against measles has taken a turn for the worse," 30 Nov. 2018 Since then, there have been major advances in science and infection control. WSJ, "New Ideas to Fight the Flu," 20 Nov. 2018 To keep it from spreading, the hospital slammed the patient into isolation and enforced strict infection control. Maryn Mckenna, WIRED, "The Strange and Curious Case of the Deadly Superbug Yeast," 13 July 2018 Beyond The Money Crunch Price is one of many barriers — alongside patients’ lack of awareness and doctors’ hesitation to prescribe — that threaten to exacerbate the already stark disparities in PrEP use and HIV infection rates. Washington Post, "Out-Of-Pocket Costs Put HIV Prevention Drug Out Of Reach For Many At Risk," 11 July 2018 Doctors were being cautious because of the infection risk and were isolating the boys in the hospital. Time, "Divers Begin Third Mission to Free Remaining Boys Trapped in a Flooded Thai Cave," 10 July 2018 Doctors were being cautious because of the infection risk and were isolating the boys in the hospital. NBC News, "Thai cave rescue operation underway to rescue final 5 trapped," 10 July 2018 Doctors were being cautious because of the infection risk and were isolating the boys in the hospital. Author: Kaweewit Kaewjinda, Anchorage Daily News, "3rd mission underway at Thai cave, aims to rescue all left," 10 July 2018 Doctors were being cautious because of the infection risk and were isolating the boys in the hospital. Kaweewit Kaewjinda, Houston Chronicle, "3rd mission underway at Thai cave, aims to rescue all left," 10 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'infection.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of infection

14th century, in the meaning defined at sense 1

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Last Updated

17 Mar 2019

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Time Traveler for infection

The first known use of infection was in the 14th century

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More Definitions for infection

infection

noun

English Language Learners Definition of infection

: the act or process of infecting someone or something : the state of being infected
: a disease caused by germs that enter the body

infection

noun
in·​fec·​tion | \ in-ˈfek-shən How to pronounce infection (audio) \

Kids Definition of infection

1 : the act or process of passing on or introducing a germ, illness, or disease to : the state of being infected
2 : any disease caused by germs an ear infection

infection

noun
in·​fec·​tion | \ in-ˈfek-shən How to pronounce infection (audio) \

Medical Definition of infection

1 : an infective agent or material contaminated with an infective agent
2a : the state produced by the establishment of an infective agent in or on a suitable host
b : a disease resulting from infection : infectious disease
3 : an act or process of infecting syphilis infection is chiefly venereal also : the establishment of a pathogen in its host after invasion

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More from Merriam-Webster on infection

Rhyming Dictionary: Words that rhyme with infection

Spanish Central: Translation of infection

Nglish: Translation of infection for Spanish Speakers

Britannica English: Translation of infection for Arabic Speakers

Britannica.com: Encyclopedia article about infection

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