This dictionary contains 7,724 terms with more than 2,300 cross-references used in polymer science, processing and engineering. The following fields relating to plastics and polymers are covered: Polymer material science: polymers, oligomers, monomers, macromonomers, auxiliary materials (fillers, stabilizers, plasticizers, cross-linking agents, catalysts); Polymer chemistry: polymerization, polycondensation; Polymer physics: conformation of macromolecules, physical and phase condition of polymers and plastics, polymer solution, etc.; Structure and properties of polymers and plastics: molecular mass, chemical structure, mechanical properties, testing techniques, material testing machine, etc.; Polymer processing: extrusion, injection moulding; moulding operation, etc.; Polymer engineering: design of products and tools; Organic chemistry; Synthetic chemistry of organic materials.