Source : Webster's Revised Unabridged Dictionary (1913)

Noncontagious \Non`con*ta"gious\, a.
   Not contagious; not catching; not communicable by contact. --
   {Non`con*ta"gious*ness}, n.

Source : WordNet®

noncontagious
     adj : (of disease) not capable of being passed on [syn: {noncommunicable},
            {nontransmissible}]