Added 10 October 2026 terpolymer noun Categories: Obscure Words noun ! Definition from Wiktionary (CC BY-SA). More about terpolymer at Wordnik → Where our words come from → A copolymer derived from three species of monomer. Related Words: dienepropylenebipolymertripolymerquaterpolymercopolymertriheteromerheteropolymertrimerinterpolymercopolymerizationpseudocopolymer Back to today's word