roentgen

adjective
roent·​gen | \ ˈrent-gən How to pronounce roentgen (audio) , ˈrənt-, -jən, -shən \

Definition of roentgen

 (Entry 1 of 3)

: of or relating to X-rays roentgen examinations

roentgen

noun

Definition of roentgen (Entry 2 of 3)

: 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

Roentgen

biographical name

Definition of Roentgen (Entry 3 of 3)

— see röntgen

Examples of roentgen in a Sentence

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

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'roentgen.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of roentgen

Adjective

1896, in the meaning defined above

Noun

1922, in the meaning defined above

History and Etymology for roentgen

Adjective

International Scientific Vocabulary, from Wilhelm Röntgen

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Time Traveler for roentgen

Time Traveler

The first known use of roentgen was in 1896

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Dictionary Entries Near roentgen

roemerite

roentgen

Roentgen

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Cite this Entry

“Roentgen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/roentgen. Accessed 1 Dec. 2021.

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More Definitions for roentgen

roentgen

adjective
roent·​gen
variants: also röntgen \ ˈrent-​gən How to pronounce roentgen (audio) , ˈrənt-​ How to pronounce roentgen (audio) , -​jən; ˈren-​chən How to pronounce roentgen (audio) , ˈrən-​ \

Medical Definition of roentgen

 (Entry 1 of 2)

: of, relating to, or using X-rays : x-ray roentgen examinations roentgen therapy

roentgen

noun
variants: also röntgen

Medical Definition of roentgen (Entry 2 of 2)

: 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

More from Merriam-Webster on roentgen

Britannica.com: Encyclopedia article about roentgen

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