empyrean.
empyrean /emˈpirēən ˌempəˈrēən / empyreal I. adjective belonging to or deriving from heaven. II. noun — (the empyrean) 1. heaven, in particular the highest part of heaven. 2. ‹literary› the visible heavens; the sky. – origin late Middle English (as an adjective): via medieval Latin from Greek empurios, from en- ‘in’ + pur ‘fire.’ The noun dates from the mid 17th cent.
