What condition is defined as obstruction of the intestine?

The condition characterized by obstruction of the intestine is known as ileus. In medical terms, an ileus occurs when there is a disruption in the normal functioning of the intestines, which can prevent the passage of contents through the digestive tract. This can happen for various reasons, including post-operative complications, infections, or certain medications. An ileus can be classified as either a functional obstruction, where the muscles of the bowel do not work properly, or a mechanical obstruction, where there is a physical blockage.

In contrast, hemorrhoids refer to swollen blood vessels in the rectum or anus, which do not involve intestinal obstruction. Hernias occur when an internal part of the body pushes through a weakness in the muscle or surrounding tissue and can sometimes lead to obstruction but are more about displacement than ongoing intestinal paralysis. Diverticulosis is a condition involving the formation of small pouches in the wall of the colon, which may lead to diverticulitis but is not defined specifically as an obstruction of the intestine. Thus, ileus is the most accurate term referring to intestinal obstruction within the given options.