roentgen Hear it!

roentgen definition

roent·gen (rent′gən, ren′c̸hən)

noun

a basic unit of exposure to X-rays, gamma rays, or other ionizing radiation, equal to the amount of radiation that will produce an electric charge of 0.000258 coulomb per kilogram of dry air: abbrev. R

Etymology: after Wilhelm Konrad Roentgen

Roentgen definition

Roent·gen (rent′gən; Gerrënt′gən)

Roentgen, Wilhelm Konrad (vil′helm′ kō̂n′rät′) 1845-1923; Ger. physicist: discoverer of X-rays

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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