noble gas

noun

: 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 And an ambitious plan by researchers in Canada aims to study molecules confined inside a solid crystal of frozen noble gas. Luke Caldwell, Scientific American, 16 Jan. 2024 Chemists group elements with similar properties, like halogens and noble gases. Robert M. Thorson, Discover Magazine, 9 Dec. 2023 The noble gas neon was first isolated by British chemists at the turn of the 20th century. Lina Abascal, Los Angeles Times, 22 Aug. 2023 Your chemistry teacher probably taught you that helium, a noble gas, never reacts with anything, but that turns out to be entirely untrue — at least, under certain highly exotic conditions. Corey S. Powell, Discover Magazine, 29 Oct. 2014 Another noble gas element helped to make the find possible. Ken Croswell, Discover Magazine, 12 Dec. 2019 Scerri, for one, is a fan, and notes that helium’s counterintuitive position may yet be vindicated — in 2017, the supposedly noble gas was found to form a stable compound with sodium at high pressure. Cody Cottier, Discover Magazine, 12 Apr. 2022 The other option is to use a noble gas, such as neon. Discover Magazine, 12 Feb. 2019 Xenon is a colorless and odorless noble gas that is found in tiny amounts throughout our atmosphere. Joshua Hawkins, BGR, 7 July 2022

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'noble gas.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1902, in the meaning defined above

Time Traveler
The first known use of noble gas was in 1902

Dictionary Entries Near noble gas

Cite this Entry

“Noble gas.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/noble%20gas. Accessed 14 Apr. 2024.

Medical Definition

noble gas

noun
no·​ble gas ˈnō-bəl- How to pronounce noble gas (audio)
: 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

More from Merriam-Webster on noble gas

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!