Repeating series of events or processes (5)
I believe the answer is:
cycle
'repeating series of events or processes' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for cycle that I've seen before include "Travel (on wheels)" , "Series of stories or poems" , "Repeating sequence" , "Recurring set of events" , "Recurring pattern of events" .)