Final answer:
Positional asphyxia is inadequate breathing or respiratory arrest caused by a body position that restricts breathing.
Step-by-step explanation:
Positional asphyxia is inadequate breathing or respiratory arrest caused by a body position that restricts breathing. It occurs when an individual is in a position that hinders their ability to breathe, resulting in a reduced supply of oxygen to the body. This can happen when a person is trapped or compressed in a way that restricts their chest and diaphragm movement, such as being pinned or wedged in a tight space.