a stable dispersion of either solids in liquids or solids in solids. Definition for solenoid : a long coil of wire consisting of may loops; when current flows through it, the magnetic field resembles that of a bar magnet. Definition for Solubility Product Constant :Equilibrium constant that applies to the dissolution of a slightly soluble compound. Definition for Solubility Product Principle :The solubility product constant expression for a slightly soluble compound is the product of the concentrations of the constituent ions, each raised to the power that corresponds to the number of ions in one formula unit . Definition for Solute :The dispersed (dissolved) phase of a solution. Definition for Solution :Homogeneous mixture of two or more substances. Definition for Solvation :The process by which solvent molecules surround and interact with solute ions or molecules. Definition for Solvent :The dispersing medium of a solution. Definition for Solvolysis :The reaction of a substance with the solvent in which it is dissolved.