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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
1900-05 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for noble gas
  • And radioactive noble gas emissions are not mentioned.
  • Chemists at the laboratory also determined that radon, another noble gas, is capable of producing chemical compounds.
  • Radon is a naturally occurring, radioactive, noble gas that is odorless and tasteless.
  • As a noble gas, radon is colorless, odorless and chemically inert and cannot be detected by human senses.
  • Andy specializes in application of noble gas geochemistry for a variety of geologic and hydrogeologic investigations.
  • noble gas recharge temperatures are calculated from these well-established curves.
  • Your company must have experience with cryogenics and noble gas collections and separations.
British Dictionary definitions for noble gas

noble gas

another name for inert gas (sense 1)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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noble gas in Medicine

noble gas no·ble gas (nō'bəl)
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. Also called inert gas.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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noble gas in Science
noble gas
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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