DuckCorp Dico

Found 2 definitions

1.                 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]
   
                   
                 

2.                 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]