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noun
Any of the chemically inert gaseous elements of the helium group in the periodic table.
synonyms: argonon, noble gas.
is a specific kind of: chemical element, element | gas.
is a broader term that covers: Ar, argon, atomic number 18 | atomic number 2, He, helium | atomic number 36, Kr, krypton | atomic number 10, Ne, neon | atomic number 86, radon, Rn | atomic number 54, Xe, xenon.
Dutch: edelgasPolish: gaz szlachetny, helowiec
Find more on inert gas elsewhere: etymology - rhymes - Wikipedia.
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