An accelerated process or program means that things are happening faster than usual.
When people talk about an accelerated course at school, they mean it's shorter than normal and students learn more material quickly. It's like a condensed version of the regular class. Some workplaces also have accelerated training programs where employees can finish courses in just a few weeks instead of months or even years. This way, new skills are acquired faster, and workers can get back to their jobs sooner.
To cause to move faster; to quicken the motion of; to add to the speed of.
Moving or progressing faster than is usual.
