/ əˌpɒθiˈəʊsɪs; NAmE əˌpɑːθiˈoʊ-/ noun [ usually sing. ] ( pl. apothe·oses / -siːz; NAmE /) ( formal )
1.
the highest or most perfect development of sth
2.
the best time in sb's life or career
3.
a formal statement that a person has become a god :
the apotheosis of a Roman Emperor
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WORD ORIGIN
late 16th cent.: via ecclesiastical Latin from Greek apotheōsis , from apotheoun make a god of, from apo from + theos god.