inert gas

noun

: noble gas

Examples of inert gas in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The inert gas keeps their rocket hardware safe by pushing out more volatile propellants in the case of a scrub. — Richard Tribou, The Orlando Sentinel, 4 Apr. 2026 Fire officials said the vapor was liquid nitrogen, which was described as inert gas that is non-flammable and non-poisonous. — Justin Muszynski, Hartford Courant, 26 Dec. 2024 An ion engine works by using an inert gas as a propellant; often this gas is xenon, but Takahashi used argon. — Keith Cooper, Space.com, 16 Sep. 2025 To protect the cargo, the capsule is pressurized with nitrogen or some other inert gas. — David Szondy june 22, New Atlas, 22 June 2026 See All Example Sentences for inert gas

Word History

First Known Use

1902, in the meaning defined above

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

Rhymes for inert gas

See All Rhymes for inert gas

Browse Nearby Words

inertance
inert gas
inertia
See all Nearby Words

Cite this Entry

“Inert gas.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/inert%20gas. Accessed 7 Jul. 2026.

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Medical Definition

inert gas

noun
: noble gas

More from Merriam-Webster on inert gas

Britannica.com: Encyclopedia article about inert gas

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