Failing to react with a specified @CT01038@ under specified conditions. The term should not be used in place of @S05900@, since a relatively more @S05900@ species may nevertheless be more @R05180@ than some reference species towards a given reaction partner.
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1175 [Terms] [Paper]