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
3 a :the state produced by the establishment of an infective agent in or on a suitable host
b :a disease resulting from infection
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

  1. Poor hygiene can increase the danger of infection.

  2. The wound has so far remained free of infection.

  3. steps you can take to decrease your computer's risk of infection

Recent Examples of infection from the Web

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.

First Known Use of infection

14th century


INFECTION Defined for English Language Learners

infection

noun

Definition of infection for English Language Learners

  • : the act or process of infecting someone or something : the state of being infected

  • : a disease caused by germs that enter the body


INFECTION Defined for Kids

infection

noun in·fec·tion \ in-ˈfek-shən \

Definition of infection for Students

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

Medical Dictionary

infection

noun in·fec·tion \ in-ˈfek-shən \

medical Definition of infection

1 :an infective agent or material contaminated with an infective agent
2 a :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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