infection

noun
in·​fec·​tion | \in-ˈfek-shən \

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 an infective agent 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

Biochemists screened 4,960 compounds for their ability to protect E. coli from phage infection and found 11 that could. Diana Gitig, Ars Technica, "Bacteria engage in chemical warfare against viruses," 5 Dec. 2018 The thief ant traipsing across your kitchen counter also produces an antibiotic that may eventually be useful against hard-to-fight infections. Lisa Margonelli, WSJ, "‘Never Home Alone’ Review: The Critters Chez Nous," 28 Nov. 2018 The truth is that spiders rarely bite us, and nearly all of the reports are actually infections due to resistant Staphylococcus bacteria (MRSA), misdiagnosed by patients and doctors alike. Rob Dunn, Discover Magazine, "Our Attempts to Eradicate Insects are Just Making them Resistant to Pesticides," 16 Nov. 2018 Poor techniques and hygiene can mean infections and long-term damages to your feet. Chris Ciolli, Allure, "I Got Gwyneth Paltrow's Favorite $185 Pedicure and My Feet Have Never Looked Better," 4 Oct. 2018 The reports point to a perfect storm of sorts that's fueling rampant infections. Dan Goodin, Ars Technica, "E-commerce site is infected not by one, but two card skimmers," 20 Nov. 2018 But the type involved with this outbreak is known to cause particularly severe infections. Sarah Jacoby, SELF, "Here Are the E. Coli Symptoms to Watch Out For, Just in Case You Ate Contaminated Romaine Lettuce Recently," 20 Nov. 2018 Laws vary by state, but in many places NPs, PAs, and midwives can prescribe medication, diagnose infections, and perform checkups. Barbara Brody, Glamour, "The Ob-Gyn Shortage Is Real—And It Might Impact Your Care," 14 Nov. 2018 Children were more likely to develop asthma and acquire infections like tuberculosis. Umair Irfan, Vox, "Why India’s air pollution is so horrendous," 31 Oct. 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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Statistics for infection

Last Updated

8 Dec 2018

Look-up Popularity

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 \

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 \

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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