Presence (10)
I believe the answer is:
attendance
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">presence</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 attendance that I've seen before include "People present" , "how many are watching?" , "Service" , "Turnout" , "Act of being present" .)