cataclysma
Cataclysma is a term used to describe a period of immense upheaval, destruction, or transformation. It often implies a catastrophic event that fundamentally alters the course of history, society, or the natural world. The word itself derives from the Greek "kataklysmos," meaning deluge or flood, suggesting a powerful, overwhelming force.
Historically, cataclysmas have been associated with natural disasters of unprecedented scale, such as massive volcanic eruptions,
In a more metaphorical sense, cataclysma can refer to periods of intense social, political, or economic turmoil.