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}, {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]
RAD <programming> {Rapid Application Development}.
RAD Rapid Application Development [toolkit] (Delphi, Borland)
RAD Research And Development [data communications] (manufacturer)