Post-mortem (7)
I believe the answer is:
autopsy
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">post-mortem</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 autopsy that I've seen before include "final examination" , "Post-mortem inspection" , "An official post-mortem examination" , "PM" , "Examination to determine cause of death" .)