In surgery, an incision of the urethral meatus mainly to enlarge it: Dr. Smith told Mr. Clark that the procedure of meatotomy involved the widening of the opening at the tip of the penis to make peeing more relaxing and comfortable. and that it was a very safe method.

An incision (surgical procedure) made to enlarge a meatus (an opening or passage: A porotomy is often performed in the passage leading to the body surface), as of the urethra or ureter.

The urethra consists of transport tubes leading from the bladder to discharge urine outside the body.

The ureter is either of a pair of thick-walled tubes that carry urine from the kidney to the urinary bladder.

In males, the urethra travels through the penis, and carries semen as well as urine. In females, the urethra is shorter than in the male and emerges above the vaginal opening.