The best moment or highest point in the development of something, for example of a life or career; the apex, culmination, or climax (of a development).
(loosely) Release from earthly life, ascension to heaven; death.
(psychology) The latent entity that mediates between a person's psyche and their thoughts. The id, ego and superego in Freudian Psychology are examples of this.
“And the things it forgets, the apotheoses and apocalypses it lets sift through its mesh!”
“Arguing that Philips was genuinely horrified by the unauthorized printing of her poems in 1663 Beal proposes three apotheoses for Philips, who died shortly afterwards.”