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in the PONS Dictionary

āēr <āëris> m (Akk āera u. āerem) (griech. Fw.)

1.

aer
die untere Luftschicht; Luft [ maritimus; salubris ]

2.

aer
Declension of āēr
Case Singular Plural
Nominative āēr āërēs
Genitive āëris āërum
Dative āërī āëribus
Accusative āërem āërēs
Ablative āëre āëribus
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