Preserve for burial (6)
I believe the answer is:
embalm
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">preserve for burial</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for embalm that I've seen before include "Prepare for burial" , "Treat corpse so as to retard decay" , "Preserve corpse from decay" , "Prepare corpse for preservation (6)" , "Make into mummy" .)