infection

in·fec·tion

noun \in-ˈfek-shən\

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