gamma radiation
noun🔊/ˌɡæmə reɪdiˈeɪʃn/
🔊/ˌɡæmə reɪdiˈeɪʃn/
[uncountable] (also gamma rays [plural])
(high-energy rays of very short wavelength sent out by some radioactive substances γ 辐射；伽马辐射；γ 射线；伽马射线 gamma rays given off by plutonium 钚发出的伽马射线