noun (n)

• a final climactic stage(noun.time)

  Example:
  Their achievements stand as a culmination of centuries of development.
  

  Synonym:
  apogee
  

  source: wordnet30
• (astronomy) a heavenly body's highest celestial point above an observer's horizon(noun.location)

  source: wordnet30
• the decisive moment in a novel or play(noun.communication)

  Synonym:
  climax
  

  source: wordnet30
• a concluding action(noun.act)

  Synonym:
  closing, completion, mop up, windup
  

  source: wordnet30
• The attainment of the highest point of altitude reached by a heavenly body; passage across the meridian; transit.(noun)

  source: webster1913