This tablet is a solute substance.
An example of a solute is sugar dissolving in hot water.
Origin of solutefrom Classical Latin solutus, past participle of solvere, to loosen: see solve
Origin of soluteFrom Middle English loose, porous from Latin solūtus past participle of solvere to loosen ; see leu- in Indo-European roots.
(comparative more solute, superlative most solute)
(third-person singular simple present solutes, present participle soluting, simple past and past participle soluted)
From Latin solutus.