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
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Recent Examples of argon from the Web
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The relative humidity of the argon gas is at 40 percent, and the case remains continually at 67 degrees Fahrenheit.
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Yet this explanation works only if the nitrogen DAMA uses in one step of their procedure contains argon, which is unknown.
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Under normal conditions, the air people breathe consists of about 21 percent oxygen, 78 percent nitrogen and one percent argon and other gases, including carbon dioxide.
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Noble gases such as argon and neon are added to specialized glass tubes, where air and impurities are vacuumed out.
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Mars' atmosphere is 95.97 percent carbon dioxide, 1.89 percent nitrogen, 1.93 percent argon, 0.0557 percent carbon monoxide and just 0.146 percent oxygen.
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By comparison, Earth's atmosphere is made up nitrogen (78.09 percent), oxygen (20.95 percent), argon (0.93 percent), carbon dioxide (0.04 percent) and small amounts of other gases.
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The same is true of other physiologically inert gases, including helium and argon, which kill only by replacing oxygen.
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Certain isotopes of argon radioactively decay more or less depending on the season.
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.
Origin and Etymology of argon
ARGON Defined for English Language Learners
Definition of argon for English Language Learners
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: a chemical element that is a colorless gas and that is used in various products (such as lasers and some electric light bulbs)
Medical Dictionary
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
Learn More about argon
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See words that rhyme with argon Spanish Central: Translation of argon Nglish: Translation of argon for Spanish speakers Britannica English: Translation of argon for Arabic speakers Britannica.com: Encyclopedia article about argon
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