Dictionary definitions
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rad
From The Collaborative International Dictionary of English v.0.48:
Rad \Rad\ (r[a^]d), n. [radiation absorbed dose.] A unit of measurement of the amount of ionizing radiation absorbed by an object, equal to an energy of 100 ergs per gram of irradiated material (equal to 0.01 gray). [PJC] .
From The Collaborative International Dictionary of English v.0.48:
Rad \Rad\ (r[a^]d), obs. imp. & p. p. of Read, Rede. --Spenser. [1913 Webster]
