noun
any of the chemically inert gaseous elements of the helium group in the periodic table
• Hypernyms: ↑chemical element, ↑element, ↑gas
• Hyponyms:
↑argon, ↑Ar, ↑atomic number 18, ↑helium, ↑He, ↑atomic number 2, ↑krypton, ↑Kr, ↑atomic number 36, ↑neon, ↑Ne, ↑atomic number 10, ↑radon, ↑Rn, ↑atomic number 86, ↑xenon, ↑Xe, ↑atomic number 54
* * *
= ↑noble gas
Useful english dictionary. 2012.