rad
rad1 definition
rad (rad)
noun
a basic unit of an absorbed dose of radiation, equal to the absorption of 100 ergs of energy per gram of material or 0.01 joule per kilogram of material (0.01 gray or 1.1 roentgen)
Etymology: < rad(iation)
rad2 definition
rad
- radian(s)
- radical
- radius
- radix
Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.
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