The quality or state of being capable of being dissolved or separated into component parts.
From dissoluble (capable of being dissolved) + -ity (quality or state). Dissoluble comes from Latin dissolubilis, from dissolvere (to dissolve).
Sugar's dissolubility in water is why you can make sweet tea—the sugar molecules have a positive affinity for water molecules and disperse throughout, but salt has even higher dissolubility in water, which is why the ocean is so salty.
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