annihilable
/ˌænɪhɪˈleɪbəl/Definitions
1. adjective
capable of being annihilated; capable of being completely destroyed or eliminated
“The scientist warned that the asteroid was annihilable, and its impact could lead to the end of human civilization.”
2. noun
a thing that can be annihilated or completely destroyed
“The concept of time is considered an annihilable aspect of the universe by some philosophers.”