aerum

• (Classical Latin) IPA^(key): [ˈaː.ɛ.rũː]
• (modern Italianate Ecclesiastical) IPA^(key): [ˈaː.e.rum]

āerum

1. genitive plural of āēr

• (Classical Latin) IPA^(key): [ˈae̯.rũː]
• (modern Italianate Ecclesiastical) IPA^(key): [ˈɛː.rum]

aerum

1. genitive plural of aes

• "aerum", in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)