Polymers are an impressively versatile group of macromolecular compounds and have become indispensable in today's world. Few scientific fields have made such significant advancements as polymer research. Future possibilities are fueling a rapidly growing industry. Intensive research and work on polymers is being conducted worldwide. Therefore, it is important to avoid linguistic misunderstandings in international communication. This dictionary contributes to this by presenting the most important vocabulary - 12,500 terms - in a clear manner. Additionally, it includes a detailed list of acronyms.