Polymer composed of macromolecules containing ionic or ionizable groups, or both, irrespective of their nature, content, and location. Synonym: ion-containing polymer.
Source:
PAC, 2006, 78, 2067. 'Terminology of polymers containing ionizable or ionic groups and of polymers containing ions (IUPAC Recommendations 2006)' on page 2071 (https://doi.org/10.1351/pac200678112067)