- phosphorous
- polyphyletic origin
- polyphony music
- phosphoric
- Pinctada margaritifera
- pearl oyster
- pelecypodous
- pelecanus onocrotalus
- pleurotus phosphoreus
- penny stock
- plethoric
- partial tone
- Petromyzon marinus
- polymorphic
- polymorphous
- paola caliari
- papanicolaou smear
- potage st. germain
- porcupine ball
- porcupinefish
- parquet circle
- parterre
- personal pronoun
- personal effects
- pole horse
- pogey
- prelate
- primary yolk sac
- pen_tailed tree shrew
- prototherian
- pentail
- pen_tail
- potamogale
- placeseeker
- placenta velementosa
- placental dysfunction
- port_wine stain
- PKU
- porphyria hepatica
- porphobiliongenuria
- porphyria erythropoietica
- porphyria cutanea tarda
- polygenic
- polygglutination
- peaceable
- Pseudopleuronectes americanus
- pickled herring
- pilaw
- propitiate
- passivism