Merriam-Webster's Collegiate Dictionary:
polyelectrolyte
polyembryonic
polyembryony
polyene
polyenic
polyester
polyesterification
polyestrous
polyethylene
polyethylene glycol
polygala
polygamic
polygamist
polygamize
polygamous
polygamy
polygene
polygenesis
polygenetic
polygenic
polyglot
polyglotism
polyglottism
polygnotus
polygon
polygonal
polygonally
polygonum
polygraph
polygrapher
polygraphic
polygraphist
polygynous
polygyny
polyhedral
polyhedral angle
polyhedron
polyhedrosis
polyhistor
polyhistoric
polyhydroxy
polyhymnia
polyisoprene
polyketide
polylysine
polymath
polymathic
polymathy
polymer
polymerase
polymerase chain reaction
polymeric
polymerisation
polymerise
polymerism
polymerization
polymerize
polymethyl methacrylate
polymorph
polymorphic
polymorphically
polymorphism
polymorphonuclear
polymorphous
polymorphous perverse
polymorphously
polymyositis
polymyxin
polynesia
polynesian
polyneuritis
polynices
polynomial
polynuclear
polynuclear aromatic hydrocarbon
polynucleotide
polynya
polyolefin
polyoma
polyomavirus
polyonymous
polyp
polypeptide
polypeptidic
polypetalous
polyphagia
polyphagous
polyphagy
polyphase
polyphasic
polyphemus
polyphenol
polyphenolic
polyphiloprogenitive
polyphone
polyphonic
polyphonic prose
