Quantitative Concept
roentgen

roent·gen [ rent-guhn, -juhn, ruhnt- ]
Definitions related to roentgen:
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A unit of exposure to ionizing radiation in CGS system. One roentgen is the amount of gamma or x-rays required to produce ions resulting in a charge of 2.58E-4 coulombs/kilogram of air under standard conditions.NCI ThesaurusU.S. National Cancer Institute, 2021
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