solvent

Short definition from Wiktionary

Noun

1. 1
   A fluid that dissolves a solid, liquid, or gaseous solute, resulting in a solution.
2. 2
   That which resolves.

Adjective

1. 1
   Able to pay all debts as they become due, and having no more liabilities than assets.
2. 2
   Having the power of dissolving; causing solution.