renewable

Universal Words adjective 1 [usuallybeforenoun] (of energy and natural RESOURCES) that is replaced naturally or controlled carefully and can therefore be used without the risk of finishing it all: renewable sources of energy such as wind and solar power 2 (of a contract, ticket, etc.) that can be made valid for a further period of time after it has finished: a renewable lease * The work permit is not renewable. OPPNON-RENEWABLE