Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun noble_gas

1 sense of noble gas

Sense 1
noble gas, inert gas, argonon -- (any of the chemically inert gaseous elements of the helium group in the periodic table)
       => chemical element, element -- (any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter)
       => gas -- (a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely)