aethra, ae, f., = αἴθρα [v. aestas],
I the upper , pure air , the bright , clear , serene sky : aetheris splendor, qui sereno caelo conspicitur, Serv. ad Verg. A. 3, 585 (poet.): flammea, Jul. ap. Macr. 6, 4 (Trag. Rel. p. 228 Rib.): siderea, Verg. A. 3, 585.—
II Transf., like aether, the sky , air , heavens : surgere in aethram, Lucr. 6, 467: volans rubrā ales in aethrā, Verg. A. 12, 247; so Sil. 4, 103; Stat. S. 1, 2, 135 al. (but in Cic. N. D. 2, 15, 42, the correct read. is aethere , B. and K.).