infection

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

Definition of infection

1a : the state produced by the establishment of one or more pathogenic agents (such as a bacteria, protozoans, or viruses) in or on the body of a suitable host an infection in his foot
b : a disease resulting from infection contagious infections infections of childhood
2 : an act or process of infecting something or someone also : the establishment of a pathogen in its host after invasion
3 : an infectious agent or material contaminated with an infectious agent … that notion that the infection was all in the air, that there was no such thing as contagion from the sick people to the sound …— Daniel Defoe It may not be uninteresting to add, that this case I vaccinated with infection taken from a secondary pock on the arm of her sister …— John Redman Coxe
4 : the communication of emotions or qualities through example or contact But immediately she resisted this intolerable fear as an infection from her husband's way of thinking.— George Eliot also : the emotion or quality that is communicated … as the evening wore on, she caught the infection of their excitement … — Thomas Hardy Besides, I know what sort of a mind I have placed in communication with my own: I know it is one not liable to take infection— Charlotte Brontë
5 : the act or result of corrupting someone's morals, character, etc. … it is at least as difficult to stay a moral infection as a physical one …— Charles Dickens … they could not know the origin—or the depth—of his susceptibility to the infection of power.— Robert A. Caro

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

Frank Glorieux, chief executive of meet organizers Cycling Vlaanderen told BBC Sport last week that Gobbo is recovering well but was in intensive care to prevent infections. Charlotte Carroll, SI.com, "17-Year-Old Italian Cyclist Impaled by Piece of Wooden Track," 17 July 2019 Good wound care is the best way to prevent any bacterial skin infection, according to the CDC. Susan Scutti, CNN, "Flesh-eating bacteria kills a Memphis man who visited Florida waterways," 12 July 2019 Doctors might recommend that a mom with breast cancer stop breastfeeding prior to surgery to decrease breast swelling and blood flow and to prevent infection. Maggie O'neill, Health.com, "This Mother Discovered She Had Breast Cancer When Her Son Refused to Breastfeed From Her Right Breast," 9 July 2019 Hand washing with soap and water is the most effective way to prevent infection. Paul Sisson, San Diego Union-Tribune, "A 6-year-old boy is latest fair-linked E. coli case in San Diego," 2 July 2019 The chairman of the House Oversight Committee is expanding the committee’s review of Gilead Science’s patent claims relating to Truvada for PrEP, the company’s drug that prevents HIV infection. Christopher Rowland, Washington Post, "Gilead’s deal to provide free HIV prevention drug for Trump effort is getting House scrutiny," 27 June 2019 Gilead Sciences, the maker of the PrEP pill Truvada, has raised the price by 45% since the drug received FDA approval for preventing HIV infection six years ago, according to an article in the online journal Healthline. Julie Washington, cleveland.com, "Costs, stigma keep HIV drug Truvada out of hands of those who need it most," 14 June 2019 Resistance is growing Antibiotics prevent harmful infections, saving millions of lives each year. Alejandra Borunda, National Geographic, "First global look finds most rivers awash with antibiotics," 29 May 2019 The Iowa Department of Agriculture and Land Stewardship advise all animal owners to thoroughly wash hands after handling pets—even household ones—to prevent infection. Elizabeth Gulino, House Beautiful, "Multiple Cases of a Disease That Can Be Transmitted From Dogs to Humans Are Confirmed in Iowa," 13 May 2019

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 2

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Statistics for infection

Last Updated

21 Jul 2019

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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

1a : the state produced by the establishment of one or more pathogenic agents or microorganisms (as bacteria, viruses, protozoans, or fungi) in or on the body of a suitable host treated a bacterial infection of the eye
b : a disease resulting from infection : infectious disease common infections of childhood contagious infections
2 : an act or process of infecting something or someone syphilis infection is chiefly venereal also : the establishment of a pathogen in its host after invasion
3 : an infectious agent or material contaminated with an infectious agent

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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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