Found 2 items, similar to Rad.
English → English (WordNet) Definition: rad rad n 1: a unit of absorbed ionizing radiation equal to 100 ergs per gram of irradiated material 2: the unit of plane angle adopted under the Systeme International d'Unites; equal to the angle at the center of a circle subtended by an arc equal in length to the radius (approximately 57.295 degrees) [syn: radian]
English → English (gcide) Definition: Rad 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] Rad \Rad\ (r[a^]d), obs. imp. & p. p. of Read, Rede. --Spenser. [1913 Webster]