Dictionary

noble gas

noun

Definition of NOBLE GAS

:  any of a group of rare gases that include helium, neon, argon, krypton, xenon, and usually radon and that exhibit great stability and extremely low reaction rates —called also inert gas
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First Known Use of NOBLE GAS

1902
Medical Dictionary

noble gas

noun no·ble gas \ˈnō-bəl-\

Medical Definition of NOBLE GAS

:  any of a group of rare gases that include helium, neon, argon, krypton, xenon, and sometimes radon and that exhibit great stability and extremely low reaction rates—called also inert gas

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