noble gas

noun Chemistry.

any of the chemically inert gaseous elements of group 8A or 0 of the periodic table: helium, neon, argon, krypton, xenon, and radon.
Also called inert gas.

Origin of noble gas

First recorded in 1900–05

Words nearby noble gas

nobiliary particle, nobility, noble, noble art, noble fir, noble gas, noble metal, noble opal, noble rot, noble savage, noble-minded

British Dictionary definitions for noble gas

noble gas

noun

another name for inert gas (def. 1)

Medical definitions for noble gas

noble gas
[ nō′bəl ]

n.

Any of the elements in Group O of the periodic table, including helium, neon, argon, krypton, xenon, and radon, which are monatomic and with limited exceptions chemically inert. inert gas

Scientific definitions for noble gas

noble gas
[ nō′bəl ]

Any of the six gases helium, neon, argon, krypton, xenon, and radon. Because the outermost electron shell of atoms of these gases is full, they do not react chemically with other substances except under certain special conditions. Also called inert gas See Periodic Table.