polyhydroxyalkanoates polyhydramnios polyisocyanate polylithionite polymerisation polymerization polynorbornene polyquaternium polycondensation polyisocyanurate polydispersity polygalacturonase polymorphonuclear polynucleotide polyoxymethylene polycarboxylate polycrystalline polyelectrolyte polyfluorinated polynucleotides polymet polymid polyco polyon polydor polyaspartic polybutadine polybutylene polycarbonat polydextrose polymorphous polymyositis polynomially polypropylen polyribosome polyropylene polyrotaxane polysilazane polysiloxane polysyllabic polysyllable polytheistic lowpoly polyrex poly polyoxyethylene polysarcosine polybutadiene polychromatic polycistronic