Generally, reaction with a solvent, or with a
lyonium ion or
lyate ion involving the rupture of one or more bonds in the reacting solute. More specifically
the term is used for
substitutionelimination and
fragmentation reactions in which a solvent species is the
nucleophile ('
alcoholysis' if the solvent is an alcohol, etc.).
Source:
PAC, 1994, 66, 1077
(Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994))
on page 1165