Answer: roentgens

AnswerCrossword Clue
ROENTGENSRadiation units.
ROENTGENSUnits of radiation dosage
ROENTGENSUnits of X-ray exposure
roentgensA unit of ionizing radiation, the amount producing one electrostatic unit of positive or negative ionic charge in one cubic centimeter of air under standard conditions
roentgensROENTGEN, a unit of radiation dosage, also RONTGEN