What is the act of going to the toilet called?

The act of going to the toilet is called defecation.

While the phrase “going to the toilet” is a common and perfectly acceptable way to describe the process, the more formal and precise term is defecation. This describes the physiological act of expelling solid waste from the body. It encompasses the entire process, from the body’s preparation for the elimination to the actual expulsion itself. This crucial bodily function, essential for removing undigested food and maintaining a healthy internal environment, is a natural and necessary part of human life.