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BNC: 0 COCA: 41110
BNC: 0 COCA: 41110

See also: Röntgen


roentgen

1 of 2

adjective

roent·​gen ˈrent-gən How to pronounce roentgen (audio)
ˈrənt-,
-jən,
-shən
: of or relating to X-rays
roentgen examinations

roentgen

2 of 2

noun

: the international unit of x-radiation or gamma radiation equal to the amount of radiation that produces in one cubic centimeter of dry air at 0°C and standard atmospheric pressure ionization of either sign equal to one electrostatic unit of charge

Example Sentences

Recent Examples on the Web
Noun
The roentgen is basically a unit that relates to how much air would be ionized if electrons were freed from their atoms. Rhett Allain, Wired, 25 June 2021 The units for exposure rates are commonly given in roentgen units per hour, or R/hr. Rhett Allain, Wired, 25 June 2021 My guess is that this is a type of unit conversion from some units other than roentgen. Rhett Allain, Wired, 25 June 2021

Word History

Etymology

Adjective

International Scientific Vocabulary, from Wilhelm Röntgen

First Known Use

Adjective

1896, in the meaning defined above

Noun

1922, in the meaning defined above

Time Traveler
The first known use of roentgen was in 1896
BNC: 0 COCA: 41110

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