I think the answer he,s looking for is .....
Regenerate is to flower a plant off leaving a small amount of growth (usualy the shitty bits of bud at the bottom ) . Then put it back under 24 hours light so that it thinks it is spring time again and if your lucky it will begin to grow new leaves after about a month.
You can then do what you like with it e.g take cuttings and keep it for a mother or just flower it off again.

Reguvanate i would say is the same thing , but hve never heard it called this b4.