Alpha rays

1.(Physics & Chem.) Rays of relatively low penetrating power emitted by radium and other radioactive substances, and shown to consist of positively charged alpha particles (helium nuclei) having enormous velocities but small masses. They are slightly deflected by a strong magnetic or electric field. Compare beta ray and gamma ray. Because the rays penetrate only a small distance in dense matter such as living tissue, small pellets of radioactive substances emitting alpha rays have been used to cause local destruction of tissue, as in cancer therapy.
Alpha Crucis
alpha decay
Alpha EV6
alpha fetoprotein
alpha foetoprotein
Alpha Geek
Alpha Geminorum
alpha globulin
alpha iron
alpha methyl dopa
Alpha Orionis
Alpha paper
alpha particle
alpha privative
alpha radiation
alpha ray
-- Alpha rays --
alpha receptor
alpha rhythm
alpha software
alpha test
alpha testing
alpha wave
alpha-adrenergic blocker
alpha-adrenergic blocking agent
alpha-adrenergic receptor
alpha-beta brass
alpha-glucosidase inhibitor
alpha-linolenic acid
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