aethera
Found Aethera with different capitalization.
Aethera masculine accusative singular of aether
aethera, ae, f., spät. Nbf. v. aether (w.s.), Apul. de mund. 1, p. 107, 23 codd.: Abl. aethera, Gromat. vet. 350, 18.
æthĕra, æ, f. , [néol. pour æther ] Apul. Mund. 1 ; Grom. 350, 18.