Medical Dictionary


noun in·fec·tion \in-ˈfek-shən\

Medical Definition of INFECTION

:  an infective agent or material contaminated with an infective agent
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
:  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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