Roentgen

[ rent-guhn, -juhn, ruhnt-; for 1 also German rœnt-guhn ]

/ ˈrɛnt gən, -dʒən, ˈrʌnt-; for 1 also German ˈrœnt gən /

noun

Wil·helm Kon·rad

[wil-helm -kon-rad; German vil-helm -kawn-raht], /ˈwɪl hɛlm ˈkɒn ræd; German ˈvɪl hɛlm ˈkɔn rɑt/, 1845–1923, German physicist: discoverer of x-rays 1895; Nobel prize 1901.

(lowercase)Physics. a unit of exposure dose that measures x-rays or gamma rays in terms of the ions or electrons produced in dry air at 0° C and one atmosphere, equal to the amount of radiation producing one electrostatic unit of positive or negative charge per cubic centimeter of air. Abbreviation: r, R

adjective

(sometimes lowercase) of or relating to Wilhelm Roentgen, the Roentgen unit, or especially to x-rays.

Also Röntgen.

Words nearby Roentgen

Roebling, roebuck, roe deer, Roeg, roemer, Roentgen, roentgen equivalent man, roentgenism, roentgenium, roentgenize, roentgeno-

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for Roentgen

Is it credible that old Melchizedek knew nothing about the telephone, or the Roentgen ray, or the cholera bacillus?
A Century of Science and Other Essays|John Fiske
At one time it was psychic force, then Roentgen or X-rays; lately it has been attributed to the mysterious effects of radium!
The Seven Follies of Science [2nd ed.]|John Phin
Even the Roentgen ray apparatus has quickly won its way, and psychotherapy is less expensive.
Psychotherapy|Hugo Mnsterberg
Luckily, not even Roentgen rays could discover what a store of drawings, charts, and fortress plans I keep in my memory.
The Coming Conquest of England|August Niemann

"That light wasn't exactly the Roentgen variety," Drake interrupted my absorption in our surroundings.
The Metal Monster|A. Merritt

British Dictionary definitions for Roentgen (1 of 2)

roentgen

rntgen

/ (ˈrɒntɡən, -tjən, ˈrɛnt-) /

noun

a unit of dose of electromagnetic radiation equal to the dose that will produce in air a charge of 0.258 × 10 –3 coulomb on all ions of one sign, when all the electrons of both signs liberated in a volume of air of mass one kilogram are stopped completelySymbol: R, r

Word Origin for roentgen

C20: named after W. K. Roentgen

British Dictionary definitions for Roentgen (2 of 2)

Roentgen

Rntgen

/ (ˈrɒntɡən, -tjən, ˈrɛnt-, German ˈrœntɡən) /

noun

Wilhelm Konrad (ˈvɪlhɛlm ˈkɔnraːt). 1845–1923, German physicist, who in 1895 discovered X-rays: Nobel prize for physics 1901

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

Medical definitions for Roentgen (1 of 2)

roentgen

n.

A unit of radiation exposure that is 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.

Medical definitions for Roentgen (2 of 2)

Roentgen

[ rĕnt′gən, -jən, rŭnt′- ]

Wilhelm Konrad 1845-1923

German physicist who discovered x-rays and developed x-ray photography, revolutionizing medical diagnosis. He won a 1901 Nobel Prize.

Scientific definitions for Roentgen

Roentgen

[ rĕnt′gən, rĕnt′jən ]

Wilhelm Konrad 1845-1923

German physicist who discovered x-rays in 1895 and went on to develop x-ray photography, which revolutionized medical diagnosis. In 1901 he was awarded the Nobel Prize for physics.

单词	roentgen
释义	Roentgen [ rent-guhn, -juhn, ruhnt-; for 1 also German rœnt-guhn ] / ˈrɛnt gən, -dʒən, ˈrʌnt-; for 1 also German ˈrœnt gən / noun Wil·helm Kon·rad [wil-helm -kon-rad; German vil-helm -kawn-raht], /ˈwɪl hɛlm ˈkɒn ræd; German ˈvɪl hɛlm ˈkɔn rɑt/, 1845–1923, German physicist: discoverer of x-rays 1895; Nobel prize 1901. (lowercase)Physics. a unit of exposure dose that measures x-rays or gamma rays in terms of the ions or electrons produced in dry air at 0° C and one atmosphere, equal to the amount of radiation producing one electrostatic unit of positive or negative charge per cubic centimeter of air. Abbreviation: r, R adjective (sometimes lowercase) of or relating to Wilhelm Roentgen, the Roentgen unit, or especially to x-rays. Also Röntgen. Words nearby Roentgen Roebling, roebuck, roe deer, Roeg, roemer, Roentgen, roentgen equivalent man, roentgenism, roentgenium, roentgenize, roentgeno- Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for Roentgen Is it credible that old Melchizedek knew nothing about the telephone, or the Roentgen ray, or the cholera bacillus? A Century of Science and Other Essays\|John Fiske At one time it was psychic force, then Roentgen or X-rays; lately it has been attributed to the mysterious effects of radium! The Seven Follies of Science [2nd ed.]\|John Phin Even the Roentgen ray apparatus has quickly won its way, and psychotherapy is less expensive. Psychotherapy\|Hugo Mnsterberg Luckily, not even Roentgen rays could discover what a store of drawings, charts, and fortress plans I keep in my memory. The Coming Conquest of England\|August Niemann "That light wasn't exactly the Roentgen variety," Drake interrupted my absorption in our surroundings. The Metal Monster\|A. Merritt British Dictionary definitions for Roentgen (1 of 2) roentgen rntgen / (ˈrɒntɡən, -tjən, ˈrɛnt-) / noun a unit of dose of electromagnetic radiation equal to the dose that will produce in air a charge of 0.258 × 10 –3 coulomb on all ions of one sign, when all the electrons of both signs liberated in a volume of air of mass one kilogram are stopped completelySymbol: R, r Word Origin for roentgen C20: named after W. K. Roentgen British Dictionary definitions for Roentgen (2 of 2) Roentgen Rntgen / (ˈrɒntɡən, -tjən, ˈrɛnt-, German ˈrœntɡən) / noun Wilhelm Konrad (ˈvɪlhɛlm ˈkɔnraːt). 1845–1923, German physicist, who in 1895 discovered X-rays: Nobel prize for physics 1901 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 Medical definitions for Roentgen (1 of 2) roentgen n. A unit of radiation exposure that is 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. Medical definitions for Roentgen (2 of 2) Roentgen [ rĕnt′gən, -jən, rŭnt′- ] Wilhelm Konrad 1845-1923 German physicist who discovered x-rays and developed x-ray photography, revolutionizing medical diagnosis. He won a 1901 Nobel Prize. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for Roentgen Roentgen [ rĕnt′gən, rĕnt′jən ] Wilhelm Konrad 1845-1923 German physicist who discovered x-rays in 1895 and went on to develop x-ray photography, which revolutionized medical diagnosis. In 1901 he was awarded the Nobel Prize for physics. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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