The quality, state, or nature of being watery or aqueous; the characteristic of containing or resembling water.
From Latin 'aqua' (water) plus English suffix '-ity' (quality or state). This is a rare or archaic English term for the property of being water-like.
Medieval alchemists would have used terms like 'aqueity' to describe the watery nature of substances they were transforming—it's a reminder that modern chemistry vocabulary came from centuries of people trying to describe and control matter.
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