"Class III" typically refers to a category in various classification systems, such as medical devices or environmental regulations. In the context of medical devices, Class III devices are those that pose the highest risk to patients and require rigorous testing and approval by regulatory bodies like the FDA. Examples include implantable devices, such as pacemakers and artificial joints, which must demonstrate safety and effectiveness before they can be marketed. In environmental regulations, "Class III" can refer to a classification of waste or pollutants that require specific handling and disposal methods to protect public health and the environment. This classification helps ensure that hazardous materials are managed properly, minimizing their impact on ecosystems and communities.