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nounSynonym of noble gas.
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APA
rare gas. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/rare%20gas
MLA
“rare gas.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/rare%20gas. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “rare gas,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/rare%20gas.
Source: rare gas on Wiktionary, CC BY-SA 4.0.