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polyhedra
polyhedral
polyhedral angle
polyhedron
polyhydroxy
Polyhymnia
polyimide
polyisoprene
polymath
polymer
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polymerase chain reaction
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polymethyl methacrylate
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polycrystal
pol·y·crys·tal [ póllee krìst'l ] (plural pol·y·crys·tals)


noun 
Definition:
 
randomly formed crystal: a crystalline structure whose crystals were formed rapidly and randomly
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