powerable

adjective3

1. •
   Capable of being powered.

   • This toy is powerable by batteries.
2. •
   (no longer used) Capable of being effected or accomplished by the application of power; possible.

   • The infinite God, He who is strictly, properly infinite, knows all the knowable and can effect all the powerable. — 1860
3. •
   (no longer used) Capable of exerting power; powerful.

   • you may see how powerable Time is in altering tongues — 1605