Polymers are an impressively diverse and versatile group of macromolecular compounds contributing significantly to progress and well-being in modern society. In this "era of polymers" the present enormous pace of new developments coupled with an unimaginable potential in polymer science is creating an exciting stimulation of a rapidly growing industry.International communication in the field of polymers requires an efficient use of the according terminology. This means the need of consulting according sources especially dictionaries. This "Polymer Dictionary" with some 12500 terms in both languages, German and English, is an attempt to serving the growing community of chemists, physicists, and engineers in research, academia, and industry involved with polymers. A detailed list of acronyms of the most important polymers adds to this overall handy and useful ready-reference. An indispensable tool for anyone working in the field of polymers.