Catastrophe definition, a sudden and widespread disaster: the catastrophe of war. See more.
1 Total Time: The computer-delivered GRE takes 3 hours and 45 minutes for the average student.  Experts recommend sitting for the GRE exam one year prior to entering graduate school. This allows for ample study time and the option to retake it if desired.
You can take the GRE exam on paper or on a computer. GRE testing time will vary depending on which version of the test you take and the potential presence of unscored research sections, but plan to set aside at least three hours.