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.
How Long Does the GRE Take? Section-by-Section Breakdown. While the GRE test length itself comes in at under four hours, even including breaks, computer test appointments are four and half hours long because of the administrative/logistical procedures (confirming identity, getting everyone seated at a computer and set up, etc.).