Final answer:
A portable radio is a compact, easily carried device, typically battery-operated, designed for convenient mobility and use during emergencies.
Step-by-step explanation:
A portable radio would be a radio designed to be easily carried from place to place. The Latin root 'port' indeed means 'to carry', and when we describe something as portable, we are essentially saying that it is easy to carry or can be moved without much effort. Portable devices, such as a portable radio, are often battery-operated and compact in size, making them convenient for use during emergencies when mobility and quick access to information are crucial.