inspiring awe; "well-meaning ineptitude that rises to empyreal absurdity"- M S Dworkin; "empyrean aplomb"- Hamilton Basso; "the sublime beauty of the night"
the region of pure light and fire; the highest heaven, where the pure element of fire was supposed by the ancients to exist: the same as the ether, the ninth heaven according to ancient astronomy
the apparent surface of the imaginary sphere on which celestial bodies appear to be projected