1. Originating outside the body
   "The heterogenous transplant was rejected by the patient's immune system"
    
2. [non-standard] Consisting of elements that are not of the same kind or nature
   "the population of the United States is vast and heterogenous";
   - heterogeneous

See also: assorted, different, disparate, diversified, inhomogeneous, miscellaneous, mixed, motley, nonuniform, sundry, varied

Encyclopedia: Heterogenous