noun. ['ˈræd'] 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).
- angular unit
Rhymes with Rad
Sentences with rad
1. Noun, singular or mass
A rad is equivalent to one centigray.
Upcycling is rad, and pallet gardening is all the rage right now.
noun. ['ˈræd'] a unit of absorbed ionizing radiation equal to 100 ergs per gram of irradiated material.