protean

adjective1

1. •
   Exceedingly variable; readily assuming different shapes or forms.

   • An amoeba is a protean animalcule.

noun1

1. •
   A protein that has been slightly modified by water, dilute acid, or enzymes, but not modified to the extent of a metaprotein.

adjective2

1. •
   Of or relating to the god Proteus in Greek mythology.
2. •
   Of or relating to the irregular Neptunian moon named for Proteus.