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.
The GRE general test does not test specific knowledge in any subject. It measures the ability to respond to questions in limited time.The Graduate Record Examination (GRE) is a multiple-choice exam designed to measure verbal, analytical, and quantitative skills.