What is the meaning of "earth-shattering"?

The meaning of "earth-shattering" is:

extremely important or terrible

What is the definition of "earth-shattering"?

The definition of "earth-shattering" is:

extremely important or terrible


"earth-shattering" means

extremely important or terrible

Example Sentences:

The terrorist attacks were earth-shattering, because the world was different afterwards.

When my boyfriend died in a car accident, it was an earth-shattering event. It took me two years to recover.

From the Blogs:

Earth-shattering moments

Media:

http://www.flickr.com/photos/79994100@N00/1658411539/