| prófugo | runaway |
| prójima | neighbour |
| prójimo | neighbour |
| prólogo | preface |
| prórroga | adjourn |
| próspero | rich |
| próspero año nuevo | Happy New Year |
| Próspero de Aquitania | Prosper of Aquitaine |
| próstata | prostate |
| próstata femenina | Skene's gland |
| prótesis | prosthesis |
| próxima | next one |
| Próxima Centauri | Proxima Centauri |
| Próxima Centauro | Proxima Centauri |
| próximo | close |
| Próximos once | Next Eleven |
| PS | PS |
| Psamutis | Psammuthes |
| Psamético I | Psammetichus I |
| Psamético II | Psammetichus II |
| Psamético III | Psametik III |
| Psel | Psel River |
| Psephotus varius | Mulga Parrot |
| Psephurus gladius | Chinese paddlefish |
| Pseudalopex | Pseudalopex |
| Pseudalopex culpaeus | Culpeo |
| Pseudalopex griseus | Pseudalopex griseus |
| Pseudalopex gymnocercus | Pampas Fox |
| Pseudalopex sechurae | Sechura Fox |
| Pseudantechinus | False antechinus |
| Pseudeos fuscata | Dusky Lory |
| Pseudibis | Pseudibis |
| Pseudibis davisoni | White-shouldered Ibis |
| Pseudibis papillosa | Black Ibis |
| pseudo | pseudo |
| Pseudo Dionisio | Pseudo-Dionysius the Areopagite |
| pseudo- | pseudo |
| Pseudobulbo | Pseudobulb |
| Pseudocereal | Pseudocereal |
| Pseudocheiridae | Pseudocheiridae |
| Pseudocheirus peregrinus | Common Ringtail Possum |
| Pseudociencia | Pseudoscience |
| Pseudocoelomata | Pseudocoelom |
| Pseudocydonia | Pseudocydonia |
| Pseudoescepticismo | Pseudoskepticism |
| Pseudohistoria | Pseudohistory |
| Pseudois nayaur | Bharal |
| Pseudolarix | Pseudolarix |
| Pseudomonas aeruginosa | Pseudomonas aeruginosa |
| Pseudomonas syringae | Pseudomonas syringae |
| Pseudopimelodidae | Pseudopimelodidae |
| Pseudoplatystoma | Pseudoplatystoma |
| Pseudoplatystoma fasciatum | Catfish |
| Pseudotsuga | Douglas-fir |
| Pseudotsuga macrocarpa | Bigcone Douglas-fir |
| Psiax | Psiax |
| Psicoacústica | Psychoacoustics |
| psicoanalista | psychoanalyst |
