noble gases; rare gases
Scientific term for the group of inert gaseous elements (helium, neon, argon, krypton, xenon, radon).
Noble gases are chemically stable.
The rightmost column of the periodic table is the noble gases.
Compound of 希 (ki, 'rare') + ガス (gasu, 'gas') + 類 (rui, 'group/class').