Navneord der begynder med P

• Psilophytaceae — Navneord – Engelsk ～ Paleozoic plants
• Psilophytales — Navneord – Engelsk ～ Paleozoic simple dichotomously branched plants of Europe and eastern Canada including the oldest known vascular land plants
• psilophyte — Navneord – Engelsk ～ any plant of the order Psilophytales: a savannah plant
• psilophyton — Navneord – Engelsk ～ any plant or fossil of the genus Psilophyton
• Psilopsida — Navneord – Engelsk ～ whisk ferns; comprising the family Psilotaceae or Psilotatae: vascular plants with no roots, partial if any leaf differentiation, and rudimentary spore sacs
• psilosis — Navneord – Engelsk ～ a chronic disorder that occurs in tropical and non-tropical forms and in both children and adults; nutrients are not absorbed; symptoms include foul-smelling diarrhea and emaciation
• psilosis — Navneord – Engelsk ～ falling out of hair
• Psilotaceae — Navneord – Engelsk ～ small family of lower ferns having nearly naked stems and minute scalelike leaves
• Psilotales — Navneord – Engelsk ～ lower vascular plants having dichotomously branched sporophyte divided into aerial shoot and rhizome and lacking true roots
• Psilotatae — Navneord – Engelsk ～ whisk ferns; comprising the family Psilotaceae or Psilotatae: vascular plants with no roots, partial if any leaf differentiation, and rudimentary spore sacs
• Psilotum nudum — Navneord – Engelsk ～ pantropical epiphytic or terrestrial whisk fern with usually dull yellow branches and minute leaves; America; Japan; Australia
• Psilotum — Navneord – Engelsk ～ type genus of the Psilotaceae
• Psithyrus — Navneord – Engelsk ～ a large bee that resembles the bumblebee but lacks pollen-collecting apparatus and a worker caste
• Psittacidae — Navneord – Engelsk ～ coextensive with the order Psittaciformes
• Psittaciformes — Navneord – Engelsk ～ an order of birds including parrots and amazons and cockatoos and lorikeets and lories and macaws and parakeets
• psittacosaur — Navneord – Engelsk ～ primitive dinosaur actually lacking horns and having only the beginning of a frill; long hind limbs and short forelimbs; may have been bipedal
• psittacosaurus — Navneord – Engelsk ～ primitive dinosaur actually lacking horns and having only the beginning of a frill; long hind limbs and short forelimbs; may have been bipedal
• psittacosis — Navneord – Engelsk ～ infectious disease of birds
• psittacosis — Navneord – Engelsk ～ an atypical pneumonia caused by a rickettsia microorganism and transmitted to humans from infected birds
• Psittacula — Navneord – Engelsk ～ a genus of Psittacidae

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