adj 1: relating to the condition of immunity; "the immune system"
2: secure against; "immune from taxation as long as he resided
in Bermuda"; "immune from criminal prosecution"
3: relating to or conferring immunity (to disease or infection)
4: (usually followed by `to') not affected by a given
influence; "immune to persuasion"
n : a person who is immune to a particular infection
Source: WordNet® 2.0