Preparation for exam (8)
I believe the answer is:
revision
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">preparation for exam</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 revision that I've seen before include "It's done before examination" , "Studying - change" , "Making of amendments" , "Preparation for exams" , "Process of going over work studied again" .)