Degree dissertation (6)
I believe the answer is:
thesis
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">degree dissertation</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for thesis that I've seen before include "student's work" , "research paper" , "A lengthy essay, perhaps for degree" , "writing following research" , "Theme for an essay" .)