Source : Webster's Revised Unabridged Dictionary (1913)

Solvency \Sol"ven*cy\ (s[o^]l"ven*s[y^]), n. [See {Solvent}.]
   The quality or state of being solvent.

Source : WordNet®

solvency
     n : the ability to meet maturing obligations as they come due
         [ant: {insolvency}]