The Collaborative International Dictionary of English v.0.48:

Solvent \Sol"vent\ (s[o^]l"vent), a. [L. solvens, p. pr. of
   solvere. See Solvable.]
   1. Having the power of dissolving; dissolving; as, a solvent
      fluid. "The solvent body." --Boyle.
      [1913 Webster]

   2. Able or sufficient to pay all just debts; as, a solvent
      merchant; the estate is solvent.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Solvent \Sol"vent\, n. (Chem.)
   A substance (usually liquid) suitable for, or employed in,
   solution, or in dissolving something; as, water is the
   appropriate solvent of most salts, alcohol of resins, ether
   of fats, and mercury or acids of metals, etc.
   [1913 Webster]

   2. That which resolves; as, a solvent of mystery.
      [1913 Webster]

WordNet (r) 3.0 (2006):

solvent
    adj 1: capable of meeting financial obligations [ant:
           insolvent]
    n 1: a liquid substance capable of dissolving other substances;
         "the solvent does not change its state in forming a
         solution" [syn: solvent, dissolvent, dissolver,
         dissolving agent, resolvent]
    2: a statement that solves a problem or explains how to solve
       the problem; "they were trying to find a peaceful solution";
       "the answers were in the back of the book"; "he computed the
       result to four decimal places" [syn: solution, answer,
       result, resolution, solvent]