In the context of stereochemistry, the term is restricted to the arrangements of atoms
of a molecular entity in space that distinguishes
stereoisomers, the
isomerism between which is not due to
conformation differences.
Source:
PAC, 1996, 68, 2193
(Basic terminology of stereochemistry (IUPAC Recommendations 1996))
on page 2204
PAC, 1994, 66, 1077
(Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994))
on page 1099