Fuses (6)
I believe the answer is:
merges
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fuses</span>' is the definition.<br/ ><span class="explanation-format__explanation">('merge' can be a synonym of 'fuse')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for merges that I've seen before include "Combines" , "Blends with, integrates" , "Blends or coalesces" .)