At one point, a catastrophic change reduced the vast body of fresh water to a seasonal lake or marsh.

Barring catastrophic changes in fashion, they look as if they could go on forever.

Deforestation may be contributing to potentially catastrophic changes in the earth's atmosphere.

Only that could explain the catastrophic changes he had already witnessed.

The conversation turned to the topic on everyone's lips: the catastrophic changes taking place around them, which no one could see.

Yet even this ultimately catastrophic change seems at first to have made little difference.

However, the early 20th century saw several catastrophic changes that ruined the commercial sponge industry on Kalymnos.

A catastrophic change is characterized by a large alteration of conditions in a short period of time.

He was able to enter, and this brought about catastrophic change.

A catastrophic change had taken place in his life, and he was wholly unable to adjust himself to it.