Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun alpha_ray

1 sense of alpha ray

Sense 1
alpha radiation, alpha ray -- (the radiation of alpha particles during radioactive decay)
       => corpuscular radiation, particulate radiation -- (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))
       => ionizing radiation -- (high-energy radiation capable of producing ionization in substances through which it passes)