Derived from living matter (7)
I believe the answer is:
organic
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">derived from living matter</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 organic that I've seen before include "Derived from animal or vegetable matter" , "without the use of chemicals" , "Biological" , "(Of food) produced without synthetic fertilisers or pesticides" , "No cigar (anag.)" .)