The quality or state of being aerial; something that exists or occurs in the air, or the characteristic of being light and airy.
From 'aerial' plus the abstract noun suffix -ity, which forms nouns describing qualities or states. Common in English for creating abstract concepts.
In art and literature, 'aeriality' describes that ethereal, floating quality—think of how watercolor paintings seem to dissolve into air, or how a soprano's high notes seem to float above everything else!
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