culmination
n.the final result of a long process or a lot of hard work. It is the highest point or the end of a series of events.
n.the highest point of attainment or the final stage of a process, typically reached after a long period of time. Often implies the successful completion of a series of actions.
“The concert was the culmination of months of practice.”
“The new law represents the culmination of years of campaigning by environmental activists.”
“The gallery's retrospective exhibition serves as the culmination of the artist's forty-year career, bringing together works from every major period of her creative development.”
Often used with the preposition 'of' to indicate the process that led to the result.
“The trial, expected to last four weeks, may not resolve the question of who killed Shakur, but members of his family have described it as the culmination of years of grief and trauma.”
“The judge said the baby's death was not the culmination of repeated instances of neglect or abuse over a period of weeks or months.”
Borrowed from French culmination, from culminer, or from Medieval Latin culminatus + -tion. Morphologically culminate + -ion.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.