apotheosis
noun /əˌpɒθiˈəʊsɪs/
  /əˌpɑːθiˈəʊsɪs/
[usually singular] (plural apotheoses 
 (formal) /əˌpɒθiˈəʊsiːz/
  /əˌpɑːθiˈəʊsiːz/
)- the highest or most perfect development of something
- the best time in somebody’s life or career                                     
- a formal statement that a person has become a god- the apotheosis of a Roman emperor
 
Word Originlate 16th cent.: via ecclesiastical Latin from Greek apotheōsis, from apotheoun ‘make a god of’, from apo ‘from’ + theos ‘god’.