renewable

Short definition from Wiktionary

Adjective

1. 1
   Able to be renewed; capable of renewal.
2. 2
   Sustainable; able to be regrown or renewed; having an ongoing or continuous source of supply.

Noun

1. 1
   A thing that is renewable: A renewable resource or source of energy.
2. 2
   A thing that is renewable: A renewable fuse; a fuse which can be opened in order to replace the element.