Final answer:
A vasovasostomy is the surgical procedure used to reverse a vasectomy, restoring the flow of sperm by reconnecting the vas deferens.
Step-by-step explanation:
The reversal of a vasectomy is known as a vasovasostomy. During a vasectomy, a male sterilization procedure, the vas deferens are surgically altered to block sperm and prevent them from being ejaculated. If a man decides to reverse this procedure, the surgery performed is called a vasovasostomy, where the previously cut or sealed sections of the vas deferens are reconnected to allow the flow of sperm once again.