Prolonged applause (7)
I believe the answer is:
ovation
'prolonged applause' is the definition.
(I've seen this before)
This is all the clue.
(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" .)