Final answer:
A supplied air respirator is an atmosphere-supplying respirator for which the source of breathing air is not designed to be carried by the user.
Step-by-step explanation:
An atmosphere-supplying respirator for which the source of breathing air is not designed to be carried by the user is defined as a supplied air respirator. This type of respirator delivers clean air from an external source to the user through a hose or tube connected to a remote air supply.