Meaning of “noble gas” in the English Dictionary

british dictionary

(Definition of “noble gas” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"noble gas" in American English

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noble gasnoun [ C ]

us /ˈnoʊ·bəl ˈɡæs/

chemistry any of a group of gases, such as helium, that do not react with other chemicals

(Definition of “noble gas” from the Cambridge Academic Content Dictionary © Cambridge University Press)