empyrean
Definitions
Relating to or belonging to the highest heaven or the sky.
The visible heavens or the firmament.
The highest part of heaven, thought by the ancients to be the realm of pure fire or light.
Examples
The poet gazed upward, imagining the souls of the departed ascending into the vast, golden empyrean.
As the clouds parted, the mountain peak seemed to reach toward the very heights of the empyrean.
Synonyms
celestial heavenly ethereal sublime sky-high divine supernal