Pli-o-hip´pus [Pliocene; Gr. hippos, horse.]
Pli´o-cene [Gr. pleion, more; kainos, recent.]
Plumes [Lat. pluma, small soft feather.] Feathers, especially when ornamental or large; or tufts of large and ornamental feathers.
Pneu-mo-coc´ci [Gr. pneumon, lung; kokkos, berry.] Bacteria (spheroidal) found in those suffering from pneumonia.
Pol-y-dac´tyl-ism [Gr. polys, many; daktylos, finger, toe.] The possession of an abnormally large number of fingers or toes.
Pol-y-mor´phism [Gr. polys, many; morphe, form.] Exhibition by a group of animals, as a species, of different types of form or structure.
Po-lyp´te-rus [Gr. polypteros, many-winged.]
Po-ly´o-don [Gr. polys, many; odous, tooth.]
Pol´yp [Gr. polys, many; pous, foot.]