Prolonged applause (7)
I believe the answer is:
ovation
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">prolonged applause</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 ovation that I've seen before include "Enthusiastic and loud applause (sometimes standing)" , "One's often standing" , "Enthusiastic applause, may be given standing" , "Overwhelming reception" , "Enthusiastic reception" .)