Reference meaning
rad
Last updated
a unit of absorbed ionizing radiation equal to 100 ergs per gram of irradiated material
Other meanings
2. noun
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)
Source and scope
This definition is reproduced from Princeton WordNet 3.0, sense 13646557-n, under the WordNet 3.0 License. It has not yet received VocabularyBase editorial review. Read the source and license details.