Webster's English Dictionary

Enter the word to look up:

immune

im.mune \im-'yu:n\ aj [L immunis, fr. in- + munia services, obligations; 
   akin to L]munus service 1a: FREE, EXEMPT {~ from taxation}  1b: not 
   susceptible or responsive {~ to antibiotics}  2a: having a high degree of 
   resistance to a disease {~ to diphther ia} 2b1: having or producing 
   antibodies to a given antigen {~ to horse  serum} 2b2: produced in response 
   to the presence of a given antigen {~ ag glutinins} - immune n