ar·​gon | \ ˈär-ˌgän How to pronounce argon (audio) \

Definition of argon

: a colorless odorless inert gaseous element found in the air and in volcanic gases and used especially in welding, lasers, and electric bulbs — see Chemical Elements Table

Examples of argon in a Sentence

Recent Examples on the Web The motivations were much the same for Japan’s competing neutrino experiment Hyper-K— an even bigger underground chamber that is filled with water instead of DUNE’s liquid argon. Thomas Lewton, Scientific American, 13 Apr. 2022 The grains of sand were heated with a laser, and the researchers measured the release of argon gas, which is produced from the decay of the rare but naturally occurring radioactive isotope of potassium, known as K-40. Katie Hunt, CNN, 9 Mar. 2022 That’s why fossil dating in East Africa depends so much on argon isotopes in volcanic ash layers: There are many ash layers to work with. Kiona N. Smith, Ars Technica, 21 Jan. 2022 With each pour, the capsules fill the bottle with pure argon gas that prevents oxidation of the remaining wine. Benjamin Liong Setiawan, Forbes, 3 Jan. 2022 Behind the scenes, the machine is pumping argon, an inert gas, back into the bottle, which protects the remaining wine from oxidation. Esther Mobley, San Francisco Chronicle, 30 Sep. 2021 Since argon gas is denser than air, heat and cold cannot travel as easily through it. Erica Reagle, Better Homes & Gardens, 6 Aug. 2021 All of Earth’s atmospheric gases — nitrogen, oxygen, argon, carbon dioxide, methane, etc. — would quickly escape the Moon. Ethan Siegel, Forbes, 5 July 2021 Its haphazard assortment of squat red-brick buildings had previously hosted an observatory, animal experiments, and an argon beamline for particle physics research. Paul Voosen, Science | AAAS, 24 June 2021 See More

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

First Known Use of argon

1894, in the meaning defined above

History and Etymology for argon

Greek, neuter of argos idle, lazy, from a- + ergon work; from its relative inertness — more at work

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Dictionary Entries Near argon

Argolis, Gulf of



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Last Updated

24 Apr 2022

Cite this Entry

“Argon.” Dictionary, Merriam-Webster, Accessed 23 May. 2022.

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More Definitions for argon


ar·​gon | \ ˈär-ˌgän How to pronounce argon (audio) \

Medical Definition of argon

: a colorless odorless inert gaseous element found in the air and in volcanic gases and used especially in lasers and electric bulbs symbol Ar — see Chemical Elements Table

More from Merriam-Webster on argon

Nglish: Translation of argon for Spanish Speakers

Britannica English: Translation of argon for Arabic Speakers Encyclopedia article about argon


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