Distention (noun)

1. The condition of being stretched out or swollen due to an accumulation of gas or fluid.
2. The act of expanding or stretching something to its limits.

Origin:

Derived from the latin word 'distendere' which means to stretch out or extend.

Examples:

1. The distention in her stomach was causing her pain.
2. The distention of the balloons was a sign of their good quality.
3. The distention of the balloons was a source of amusement for the children.
4. The distention of the bladder was a sign of a urinary tract infection.
5. The distention of the muscles after a workout was a sign of their growth.