What is the process called by which water is lost from the body?

The process by which water is lost from the body is called excretion. This refers to the elimination of waste products and excess substances, including water, from the body. The primary organs involved in this process are the kidneys, which filter blood to remove waste and regulate water balance. In addition to urine, the body loses water through sweat, respiration, and other means, but the main term capturing the overall loss of water and other substances is excretion.

Absorption is the process by which nutrients and water are taken up from the digestive tract into the bloodstream, which is the opposite of losing water from the body. Digestion refers to the breakdown of food into smaller, absorbable components, while respiration involves the exchange of gases (oxygen and carbon dioxide) but does not primarily focus on the loss of water from the body.