sustainable

Meanings

1. 1
   adj

   Able to be produced or sustained for an indefinite period without damaging the environment, or without depleting a resource; renewable.

   sustainable economy

2. 2
   noun

   A renewable energy source.

   It has only been in the last 20 years that the long-term trend away from fossil fuels and toward nuclear energy and sustainables has intensified.

3. 3
   adj

   capable of being sustained

4. 4
   adj

   Able to be sustained.

Etymology

From sustain + -able.