noble gas

nounChemistry.

any of the chemically inert gaseous elements of group 8A or 0 of the periodic table: helium, neon, argon, krypton, xenon, and radon.

Origin of noble gas

First recorded in 1900–05

Also called inert gas.

Words Nearby noble gas

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use noble gas in a sentence

Those reaction-resistant atoms became known as the inert or noble gases, as under ordinary conditions they all existed in the gaseous state.
The Top 10 scientific surprises of Science News’ first 100 years | Tom Siegfried | September 20, 2021 | Science News
Many agricultural experiments include a mix of noble gases and air to yield ions of nitrogen and oxygen.
Cold plasma could transform the sustainable farms of the future | Stephen Ornes | September 8, 2021 | Science News
These include plasma generated using noble gases, as well as plasma generated from air.
Cold plasma could transform the sustainable farms of the future | Stephen Ornes | September 8, 2021 | Science News
By measuring the proportion of isotopes in the noble gases, researchers could determine if the mantle had already released its gases into the atmosphere at the time of the diamond’s creation.
Diamonds contain remnants of Earth’s ancient atmosphere | Monroe Hammond | July 20, 2021 | Popular-Science
Broadley and his colleagues found that the composition of noble gases in these billions-year-old diamonds closely matched the composition found in today’s upper mantle.
Diamonds contain remnants of Earth’s ancient atmosphere | Monroe Hammond | July 20, 2021 | Popular-Science

British Dictionary definitions for noble gas

noble gas

noun

another name for inert gas (def. 1)

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for noble gas

noble gas

[ nō′bəl ]

Any of the six gases helium, neon, argon, krypton, xenon, and radon. Because the outermost electron shell of atoms of these gases is full, they do not react chemically with other substances except under certain special conditions. Also called inert gas See Periodic Table.

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