εὐάερος
From LSJ
τούτου δὲ συμβαίνοντος ἀναγκαῖον γίγνεσθαι πάροδον καὶ τροπὰς τῶν ἐνδεδεμένων ἄστρων → but if this were so, there would have to be passings and turnings of the fixed stars
English (LSJ)
ον,
A with fresh, good air, τὸ εὐ. Str.3.2.13, cf. Herod.Med. in Rh.Mus.58.73, Orib.9.20.1.
Greek (Liddell-Scott)
εὐάερος: -ον, (ἀήρ) ἔχων καλόν, δροσερὸν ἀέρα, Στράβ. 150.