indestructible
1. [ adjective ] very long lasting
Synonyms: perdurable undistroyable undestroyable durable
Examples:

"less durable rocks were gradually worn away to form valleys" "the perdurable granite of the ancient Appalachian spine of the continent"

Related terms: imperishable
2. [ adjective ] not easily destroyed
Related terms: destructible undestroyable destructibility
Similar spelling:   indestructibility
  indigestible
  indigestibleness