culmination

Noun

• a concluding action

• the decisive moment in a novel or play
  • the deathbed scene is the climax of the play
    

• (astronomy) a heavenly body's highest celestial point above an observer's horizon

• a final climactic stage
  • their achievements stand as a culmination of centuries of development
    

Related words

• Synonyms: 
  completion , closing , windup , mop up , climax , apogee