The ending or being brought to an end (9)
I believe the answer is:
cessation
'the ending or being brought to an end' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for cessation that I've seen before include "Process of stopping" , "Canoeists (anag.)" , "The ending or being brought to an end" , "An ending of canoeists" , "Halt" .)