rad

• POS: Noun

CIDE DICTIONARY

rad, 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]

rad, imp. & p. p. 

 imp. & p. p. of Read, Rede.  Spenser.  [1913 Webster]

OXFORD DICTIONARY

rad, n. (pl. same) radian.

rad, n. sl. a political radical.

rad, n. Physics a unit of absorbed dose of ionizing radiation, corresponding to the absorption of 0.01 joule per kilogram of absorbing material.

Etymology

radiation absorbed dose