solvent UK /ˈsɒlvənt/US /ˈsɑlvənt/adjective 2noun 2forms 1 adjective2 •Able to pay all debts as they become due, and having no more liabilities than assets. •Having the power of dissolving; causing solution.Surprisingly, this analysis revealed that acute exposure to solvent vapors at concentrations below those associated with long-term effects appears to increase the risk of a fatal automobile accident. — 2013 noun2 •A fluid that dissolves a solid, liquid, or gaseous solute, resulting in a solution. •That which resolves.It explains. And explanation is the true solvent of mystery. — 1921 formssolvents