Crossword Genius

Element with symbol Ra (6)

Ross

I believe the answer is:

radium

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">element with symbol ra</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>

(Other definitions for radium that I've seen before include "Radioactive metal" , "Metallic element discovered by the Curies" , "Curie-found element" , "Radioactive element discovered by the Curies" , "Element with symbol Ra" .)

I've seen this clue in The Guardian.
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