roentgen
1 of 2adjective
roent·gen ˈrent-gən 
ˈrənt-,
-jən,
-shən
: of or relating to X-rays
roentgen examinations
roentgen
2 of 2noun
: 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
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
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
Phrases Containing roentgen
Medical Definition
roentgen 1 of 2
adjective
roent·gen
variants also röntgen
ˈrent-gən ˈrənt- -jən; ˈren-chən
ˈrənt- -jən; ˈren-chən ˈrən-
: of, relating to, or using X-rays : x-ray
roentgen examinations
roentgen therapy
roentgen
2 of 2noun
variants also röntgen
: 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 (32°F) and standard atmospheric pressure ionization of either sign equal to one electrostatic unit of charge
Biographical Definition
Roentgen
biographical name
see röntgen