a. [ L. empyrius, empyreus, fiery, Gr. &unr_;, &unr_;, in fire, fiery; &unr_; in + &unr_; fire. See In, and Fire. ] Formed of pure fire or light; refined beyond aërial substance; pertaining to the highest and purest region of heaven. [ 1913 Webster ]
Go, soar with Plato to the empyreal sphere. Pope. [ 1913 Webster ]
Empyreal air,
n. Empyrean. Mrs. Browning. [ 1913 Webster ]