the quantity of a particular substance that can dissolve in a particular solvent (yielding a saturated solution)
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the property (of a problem or difficulty) that makes it possible to solve
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the quality of being soluble and easily dissolved in liquid
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Solubility \Sol`u*bil"i*ty\, n. [Cf. F. solubilit['e].] 1. The quality, condition, or degree of being soluble or solvable; as, the solubility of a salt; the solubility of a problem or intricate difficulty.
2. (Bot.) The tendency to separate readily into parts by spurious articulations, as the pods of tick trefoil.
With low solubility, it shouldn't affect groundwater supplies, he said.