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According the FAA glossary of terms, the description here is not that accurate.

Check out http://www.fly.faa.gov/Products/Glossary_of_Terms/glossary_of_terms.html

"Ground Stops are implemented for a number of reasons. The most common reasons are:
To control air traffic volume to airports when the projected traffic demand is expected to exceed the :airport's acceptance rate for a short period of time.
To temporarily stop traffic allowing for the implementation of a longer-term solution, such as a Ground :Delay Program.
The affected airport's acceptance rate has been reduced to zero.
How it works:
Flights that are destined to the affected airport are held at their departure point for the duration of :the Ground Stop."