alpha radiation

/ˈreɪdiˌeɪʃən/

Definitions of alpha radiation

1. noun

   the radiation of alpha particles during radioactive decay
   synonyms: alpha ray

   type of:

   ionizing radiation

   high-energy radiation capable of producing ionization in substances through which it passes

   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)