Definition of "insolubility" [in•sol•u•bil•i•ty]

• The quality of being insoluble (noun)

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• "The insolubility of form explains the tangents of desire."
• "Proteins in living cells always teeter on the edge of insolubility, because with so many different proteins dissolved in the cell doing different jobs, the total concentration is high and crystallization is a risk."
• "So right at the heart of the disease is the insolubility of proteins in old age."