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nobby
Nobel Prize
Nobelist
nobelium
nobiliary
nobiliary particle
nobility
noble
noble gas
noble metal
noble rot
noble savage
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noble gas
no·ble gas (plural no·ble gas·es or no·ble gass·es)


noun 
Definition:
 
inert rare gas: a chemically inert rare gas belonging to group 18 of the periodic table. Helium, neon, argon, krypton, xenon, and radon are noble gases.
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