https://doi.org/10.1351/goldbook.15429
Macromolecule in which the termini of the backbone are connected to form a ring.
Note: Linear macromolecules comprising constitutional units that include small cyclic structures [e.g., the phenylene groups in poly(ethylene terephthalate)] are not cyclic macromolecules. However, a cyclic molecule comprising such constitutional (repeating) units is a cyclic macromolecule.