definition of
infect

[1] #1 infect v. communicate a disease to; "Your children have infected you with this head cold". wn

[2] #2 infect v. [taint] contaminate with a disease or microorganism. wn

[3] #3 infect v. corrupt with ideas or an ideology; "society was infected by racism". wn

[4] #4 infect v. affect in a contagious way; "His laughter infects everyone who is in the same room". wn