Noble gas (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">noble gas</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for argon that I've seen before include "Noble gas used in light bulbs" , "Organ (anag.)" , "Chemical element" , "Inert gas in atmosphere" , "Inert eighteen ac gas" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">noble gas</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for radon that I've seen before include "hazardous substance" , "Naturally occurring inert gas" , "Colourless gas, atomic number 86" , "Inert gas - adorn (anag)" , "Rare noble gas" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">noble gas</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for xenon that I've seen before include "Inert gas used in radio valves" , "Noble element" , "One of the noble gasses" , "Heavy gaseous element" , "member of nobility?" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">noble gas</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for neon that I've seen before include "Inert gas, symbol Ne" , "None (anag.)" , "Gaseous element, in advertising signs, say" , "Small plant; colour" , "It may illuminate" .)
(Other definitions for helium that I've seen before include "Very light, inert gas" , "Second lightest element" , "... ditto: symbol He" , "Floating balloon gas" , "Light colourless gas used in balloons" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">noble gas</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for krypton that I've seen before include "Chemical element, Kr" , "Pry knot (anag) - gas" , "36 periodically?" , "Inert gas (symbol Kr)" , "Noble gas, Kr" .)