Old Prussian
— Noun
– English
～ a dead language of the (non-German) Prussians (extinct after 1700); thought to belong to the Baltic branch of Indo-European
order Pseudomonadales
— Noun
– English
～ one of two usually recognized orders of true bacteria; Gram-negative spiral or spherical or rod-shaped bacteria usually motile by polar flagella; some contain photosynthetic pigments
order Psilophytales
— Noun
– English
～ Paleozoic simple dichotomously branched plants of Europe and eastern Canada including the oldest known vascular land plants
order Psilotales
— Noun
– English
～ lower vascular plants having dichotomously branched sporophyte divided into aerial shoot and rhizome and lacking true roots
order Psittaciformes
— Noun
– English
～ an order of birds including parrots and amazons and cockatoos and lorikeets and lories and macaws and parakeets
order Psocoptera
— Noun
– English
～ an order of insects: includes booklice and bark-lice