The term 'Radiating RUNG' is a combination of two words, 'radiating' and 'RUNG'. Radiating means to spread out in all directions from a central point, while a RUNG is a crosspiece between the legs of a chair or ladder. Together, the term 'Radiating RUNG' refers to a type of SPOKE that is designed to spread out in all directions from a central point. This type of SPOKE is often used in bicycle wheels and other wheeled vehicles.