Total destruction or annihilation; everything or everyone being wiped out.
洪水で村がほとんど全滅した。
The village was almost completely destroyed by the flood.
敵の攻撃で部隊が全滅してしまった。
The unit was wiped out by the enemy attack.
火事で貴重な書類が全滅した。
The valuable documents were completely destroyed in the fire.
Total defeat or complete failure; being utterly beaten or wiped out (often used for teams, groups, or efforts).
試験は難しくて、クラスのほとんどが全滅だった。
The exam was difficult and most of the class failed completely.
ゲームで味方が全滅してしまい、やり直しになった。
All allies were wiped out in the game, so we had to restart.
作戦は失敗に終わり、投入した兵力は全滅に近かった。
The operation ended in failure and the forces deployed were nearly annihilated.