Definition:
radiation
- radiationThe energy transmitted in this way, as heat, light, electricity, etc
- radiationheat transport without the intervention of matter, as in the transport of heat from the Sun to the Earth
- radiationDivergence out from a central point, in particular evolution from an ancestral animal or plant group into a variety of new forms
- radiationThe emission of energy as electromagnetic waves or as moving subatomic particles, esp. high-energy particles that cause ionization