| corpuscular radiation | (n) a stream of atomic or subatomic particles that may be charged positively (e.g. alpha particles) or negatively (e.g. beta particles) or not at all (e.g. neutrons), Syn. particulate radiation |
| electromagnetic radiation | (n) radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge, Syn. electromagnetic wave, nonparticulate radiation |