Crossword Genius

Stratospheric gas (5)

Ross

I believe the answer is:

ozone

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">stratospheric 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 ozone that I've seen before include "Pungent form of oxygen" , "Invigorating air of the seaside" , "Stratospheric layer of gas -- invigorating sea air" , "Gas forming screen against ultraviolet radiation in the stratosphere" , "Condensed oxygen; sea air" .)

I've seen this clue in The Times, the Newsday and the Sydney Morning Herald.
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