Source : Webster's Revised Unabridged Dictionary (1913)

Solute \So*lute"\, a. [L. solutus, p. p. of solvere to loosen.
   See {Solve}.]
   1. Loose; free; liberal; as, a solute interpretation. [Obs.]
      --Bacon.

   2. Relaxed; hence; merry; cheerful. [R.]

            A brow solute, and ever-laughing eye. --Young.

   3. Soluble; as, a solute salt. [Obs.]

   4. (Bot.) Not adhering; loose; -- opposed to {adnate}; as, a
      solute stipule.

Solute \So*lute"\, v. t.
   1. To dissolve; to resolve. [Obs.]

   2. To absolve; as, to solute sin. [Obs.] --Bale.

Source : WordNet®

solute
     n : the dissolved substance in a solution; the component of a
         solution that changes its state