Cataclysm

/kˈætɐklˌɪzəm/

/ˈkætəˌkɫɪsəm/

Cataclysm

a sudden, violent natural disaster that drastically alters the earth's landscape

a sudden or disastrous event that destroys or changes a whole region or system

synonyms : calamity

Examples

1. And these are cataclysms.

2. Birds survived the cataclysm, of course, making them the last surviving lineage of the dinosaurs.

3. In the early 13th century, a great cataclysm was about the engulf much of the known world.

4. Number four are controlled cataclysms.