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Roentgen ray

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noun
  1. (sometimes lowercase) x-ray.
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Origin of Roentgen ray

First recorded in 1895–1900
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for roentgen ray

roentgen ray

noun
  1. a former name for X-ray
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
roentgen ray in Medicine

roentgen ray

n.
  1. x-ray
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.