noble gas


Definition of noble gas

: any of a group of rare gases that include helium, neon, argon, krypton, xenon, and usually radon and that exhibit great stability and extremely low reaction rates

called also inert gas

Examples of noble gas in a Sentence

Recent Examples on the Web The noble gas is difficult to obtain in large quantities owing to the energy-intensive process needed to extract it from the air and because of competing demand from electronics, lighting and space industries. Elizabeth Gibney, Scientific American, "Last Chance for WIMPs: Physicists Launch All-Out Hunt for Dark-Matter Candidate," 8 Oct. 2020 But, around the turn of the twentieth century, after the other noble gases had been discovered and shown to share properties with helium, other scientists made a column just for them, and Mendeleev fell in line. Neima Jahromi, The New Yorker, "The Histories Hidden in the Periodic Table," 27 Dec. 2019 Related Stories Beryllium, a brittle metal with atomic number 4, and helium, a noble gas with atomic number 2, are similar in ways that could influence the observation of the X17 particle anomaly in both elements. Caroline Delbert, Popular Mechanics, "The Fifth Force of Nature Could Be Real and Fantastic," 20 Nov. 2019 Radon is a noble gas that is a natural byproduct of the constant breakdown of uranium. Real Estate, "What every homeowner should know about radon," 12 Nov. 2019 Scientists are hunting through macrofossils, leaf wax, mineral types, noble gases, and much more to answer questions about what Greenland’s ancient landscape looked like when it was last exposed. Paul Voosen, Science | AAAS, "Ancient soil from secret Greenland base suggests Earth could lose a lot of ice," 29 Oct. 2019 What kind of noble gases are trapped within the glass? Christine Smallwood, Harper's magazine, "Novel, Essay, Poem," 16 Sep. 2019 Along with rocks and soil, the drive tube brought back by Cernan and Schmitt contains a smidgeon of noble gases that were locked within the rocks and soil. Jason Davis, NBC News, "Apollo moon rocks may unlock more secrets about our solar system," 21 June 2019 In the moon's vacuum, atoms of noble gases such as argon and krypton will be captured in the aluminum. James R. Berry, Popular Mechanics, "Man's First Day on the Moon," 19 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'noble gas.' 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 noble gas

1902, in the meaning defined above

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The first known use of noble gas was in 1902

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Cite this Entry

“Noble gas.” Dictionary, Merriam-Webster, Accessed 22 Jan. 2021.

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More Definitions for noble gas

noble gas

no·​ble gas | \ ˈnō-bəl- How to pronounce noble gas (audio) \

Medical Definition of noble gas

: any of a group of rare gases that include helium, neon, argon, krypton, xenon, and sometimes radon and that exhibit great stability and extremely low reaction rates

called also inert gas

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