Empyrean

a. Empyreal. Akenside.

(124) (Synop., § 130), n. [L. Lat. em-pyræum, Pg. empyreo, Sp. & Pg. empireo, Pr. empirey, Fr. empyrée, from Gr. ἔμπυρος, in fire, from ἐν, for ἐν, in, and πῦρ, fire.] The highest heaven, where the pure element of fire was supposed by the ancients to subsist.

The empyrean rung With hallelujahs. Milton.