Oxygenation refers to the process of adding oxygen or increasing the concentration of oxygen in a substance, solution or environment. This can be achieved through various methods such as aerating, exposure to air, or by introducing pure oxygen. Oxygenation is commonly used in biological and chemical processes, where it helps to improve the efficiency of reactions, promote growth, and prevent the buildup of unwanted substances. In medicine, oxygenation refers to the delivery of oxygen to tissues and organs, which can help alleviate symptoms or treat certain conditions such as hypoxia (low oxygen levels in the body).