polymorphic

Short definition from Wiktionary

Adjective

1. 1
   Relating to polymorphism (any sense), able to have several shapes or forms.
2. 2
   Having or relating to the ability to take multiple data types for a single parameter.
3. 3
   Relating to a compound that can crystallizes into two or more distinct forms (e.g. carbon, which can crystalize into coal, graphite, diamond, etc.)