roentgen

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roentgen

 [rent´gen]
the international unit of x- or γ-radiation; it is the quantity of x- or γ-radiation such that the associated corpuscular emission per 0.001293 g of air produces, in air, ions carrying 1 electrostatic unit of electrical charge of either sign. Abbreviated R.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

Roent·gen

(rĕnt'gĕn),
Wilhelm K., German physicist and Nobel laureate, 1845-1923. Discovered x-rays in November, 1895; awarded Nobel Prize in Physics in 1901 for his discovery. See: roentgen, roentgen ray.

roent·gen (R, r),

(rĕnt'gĕn, rent'chen),
The international unit of exposure dose for x-rays or gamma rays; that quantity of radiation that will produce, in 1 cc or 0.001293 g of air at STP, 2.08 × 109 ions of both signs, each totaling 1 electrostatic unit (esu) of charge; in the MKS system this is 2.58 × 10-4 coulombs per kg of air.
[Wilhelm K. Roentgen]
Farlex Partner Medical Dictionary © Farlex 2012

roentgen

also

röntgen

(rĕnt′gən, -jən, rŭnt′-)
n. Abbr. R or r
A unit of radiation exposure equal to the quantity of ionizing radiation that will produce one electrostatic unit of electricity in one cubic centimeter of dry air at 0°C and standard atmospheric pressure.

roent′gen adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

roent·gen

(r, R) (rent'gen)
The international unit of exposure dose for x-rays or gamma rays; that quantity of radiation that will produce in 1 cm of air at STP, or 0.001293 g of air, 2.08 × 109 ions of both signs, each totaling 1 electrostatic unit (e.s.u.) of charge; in the MKS system this is 2.58 × 10-4 coulombs per kg of air.
[Wilhelm K. Roentgen]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Roentgen

or

Röntgen, Wilhelm Konrad

(1845–1923) German physicist who discovered X-RAYS. A roentgen or röntgen is the quantity of X-rays or gamma radiation used as a unit of radioactivity. Symbol: R or r.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Roentgen,

Wilhelm K., German physicist and Nobel laureate, 1845-1923.
roentgen - the international unit of exposure dose for x-rays or gamma rays.
roentgen ray - Synonym(s): x-ray
roentgenograph - Synonym(s): radiograph
Medical Eponyms © Farlex 2012