stepwise reaction

A chemical reaction with at least one reaction intermediate and involving at least two consecutive elementary reactions.
See also: composite reaction
PAC, 1994, 66, 1077 (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1167
PAC, 1996, 68, 149 (A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)) on page 187