heterogeneous

Short definition from Wiktionary

Adjective

1. 1
   Diverse in kind or nature; composed of diverse parts.
2. 2
   Incommensurable because of different kinds.
3. 3
   Having more than one phase (solid, liquid, gas) present in a system or process.
4. 4
   Visibly consisting of different components.
5. 5
   Of a network comprising different types of computers, potentially with vastly differing memory sizes, processing power and even basic underlying architecture; alternatively, of a data resource with multiple types of formats.