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1 definition by Ten Second Tom

 
1.
rad
n: a unit of measurement used to describe a dose of radiation. A single rad is equivalent to 100 ergs per gram or 0.01 joules per kilogram of irradiated substance.
The Federally-defined maximum occupational radiation dose is 5 rads per year.
ayon kay Ten Second Tom ika-29 ng Setyembre, 2005