Chemical suffix (3)
I believe the answer is:
ide
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">chemical suffix</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 ide that I've seen before include "Fish, the orfe" , "Silver orfe" , "Fish of the carp family" .)