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.
If you are preparing for a GREÂ® Subject Test, you can download the free, official test preparation materials. You can view your official GREÂ® General Test and GREÂ® Subject Test scores online in your My GREÂ® Account about 10 to 15 days after your computer-delivered test date.