sälˈväləsə̇s, sȯl- noun
Etymology: solv ent + -o- + -lysis
: a chemical reaction of a solvent and a dissolved substance with the formation typically of one or two or more new compounds : either hydrolysis or an analogous reaction (as alcoholysis or ammonolysis) in which a solvent other than water plays a role similar to that of water in hydrolysis — compare solvation