-zə(r) noun
( -s )
Etymology: solutize to treat with organic salts or solvents to impart certain solvent properties (from solute + -ize ) + -er
: an agent (as an organic salt or an organic solvent) for promoting solubility ; especially : such an agent (as potassium isobutyrate) for use with a caustic solution in removing mercaptans from gasoline