WordWeb Online

1. Having no definite form or distinct shape
   "amorphous clouds of insects"
   - formless, shapeless
    
2. Lacking the system or structure characteristic of living bodies
   - unstructured
    
3. Without real or apparent crystalline form
   "an amorphous mineral"; "amorphous structure"
   - uncrystallized, uncrystallised [Brit]

See also: inorganic, noncrystalline, unformed

Encyclopedia: Amorphous