A chain that comprises constitutional units connected in such a way that adjacent constitutional units are joined to each other through more than four atoms, more than two on at least one side of each constitutional units.
A chain that comprises constitutional units joined to each other through n atoms on at least one side of each @C01288@ is termed an n-strand chain, e.g. three-strand chain. If an uncertainty exists in defining n, the highest possible number is selected.
PAC, 1996, 68, 2287. 'Glossary of basic terms in polymer science (IUPAC Recommendations 1996)' on page 2295 (https://doi.org/10.1351/pac199668122287)