Dictionary

infection

noun in·fec·tion \in-ˈfek-shən\

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

: a disease caused by germs that enter the body

Full 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
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First Known Use of INFECTION

14th century
INFECTION Defined for Kids

infection

noun in·fec·tion \in-ˈfek-shən\

Definition of INFECTION for Kids

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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