Compendium of Macromolecular Nomenclature
The Compendium of Macromolecular Nomenclature, by the International Union of Pure and Applied Chemistry (IUPAC), provides definition of polymer related terms and rules of nomenclature of polymers. It is referred to as the Purple Book.
Source: Wikipedia — Compendium of Macromolecular Nomenclature (CC BY-SA 4.0)