https://doi.org/10.1351/goldbook.M03662
A cyclic @M03667@ or a @M03667@ cyclic portion of a macromolecule.
Note:
In the literature, the term 'macrocycle' is sometimes used for molecules of low molecular mass that would not be considered 'macromolecules' as specified in the definition given in this book.
In the literature, the term 'macrocycle' is sometimes used for molecules of low molecular mass that would not be considered 'macromolecules' as specified in the definition given in this book.
See:
chain (Note 2) (in polymers)