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 hostb : 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
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
First Known Use of infection
INFECTION Defined for English Language Learners
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
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 Definition of infection
3: an act or process of infecting <syphilis infection is chiefly venereal>; also : the establishment of a pathogen in its host after invasion
Seen and Heard
What made you want to look up infection? Please tell us where you read or heard it (including the quote, if possible).