#polymer  naturally occurring or synthetic; consisting of large molecules made up of a linked series of repeated simple monomers
  supertype:  chemical_compound__compound  (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight
  subtype:  copolymer  a polymer consisting of two or more different monomers
  subtype:  polyurethane__ployurethan  any of various polymers containing the urethane radical; a wide variety of synthetic forms are made and used as adhesives or plastics or paints or rubber
     subtype:  polyfoam__polyurethane_foam  a foam made by adding water to polyurethane plastics
  subtype:  lignin  a complex polymer; the chief non-carbohydrate constituent of wood; binds to cellulose fibers to harden and strengthen cell walls of plants
  subtype:  polyamide__polymeric_amide__polymericamide  a polymer containing repeated amide groups
     subtype:  nylon.polyamide  a thermoplastic polyamide; a family of high-strength resilient synthetic materials
  subtype:  trimer  a polymer (or a molecule of a polymer) consisting of three identical monomers

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