|Origin:||katastrephein 'to turn upside down', from kata- ( CATACLYSM) + strephein 'to turn'|
1 [uncountable and countable]
a terrible event in which there is a lot of destruction, suffering, or death [= disaster]
environmental/nuclear/economic etc catastrophe
The Black Sea is facing ecological catastrophe as a result of pollution.
prevent/avert a catastrophe
Sudan requires food immediately to avert a humanitarian catastrophe.
an event which is very bad for the people involved [= disaster]
If the contract is cancelled, it'll be a catastrophe for everyone concerned.