Mouth-to-mouth is a form of resuscitation that involves the delivery of oxygen to a person who has stopped breathing. It is also known as mouth-to-mouth resuscitation or simply mouth-to-mouth. The term 'ORAL' is used to describe this technique, as it involves the use of the mouth to deliver oxygen to the patient. This technique is often used in emergency situations, such as cardiac arrest, drowning, or choking. It is an important life-saving skill and is taught in many first aid courses.