| psiquiatra | psychiatrist |
| psiquiatría | psychiatry |
| psiquico | mental |
| psiquiátrico | psychiatric |
| psitacosis | psittacosis |
| Psittacidae | Parrot |
| Psittaciformes | Parrot |
| Psittacinae | Psittacinae |
| Psittacula | Psittacula |
| Psittacula derbiana | Derbyan Parakeet |
| Psittacula eques | Mauritius Parakeet |
| Psittacula krameri | Rose-ringed Parakeet |
| Psittacus erithacus | African Grey Parrot |
| Pskov | Pskov |
| PSNR | Peak signal-to-noise ratio |
| Psoasilíaco | Psoas major muscle |
| Psocoptera | Psocoptera |
| Psophia crepitans | Grey-winged Trumpeter |
| psoriasis | psoriasis |
| Psunj | Psunj |
| Psusenes I | Psusennes I |
| Psusenes II | Psusennes II |
| Psusenes III | Psusennes III |
| PSV Eindhoven | PSV Eindhoven |
| PSX | PSX emulator |
| Psychobilly | Psychobilly |
| Psychodidae | Psychodidae |
| Psylocke | Psylocke |
| Psytrance | Psychedelic trance |
| Psámate | Psamathe |
| psíquico | psychic |
| PT | PT |
| Ptah | Ptah |
| Ptahhotep | Ptahhotep |
| Pteranodon | Pteranodon |
| Pteridophyta | Fern |
| Pteridospermatophyta | Pteridospermatophyta |
| Pteridófitas | Fern |
| Pteriomorphia | Pteriomorphia |
| Pterobranchia | Pterobranchia |
| Pterodactyloidea | Pterodactyloidea |
| Pterodactylus | Pterodactylus |
| pterodáctilo | pterodactyl |
| Pteroglossus | Aracari |
| Pteroglossus castanotis | Chestnut-eared Aracari |
| Pteroglossus frantzii | Fiery-billed Aracari |
| Pteronura brasiliensis | Giant Otter |
| Pterophyta | Fern |
| Pteropus | Pteropus |
| Pteropus giganteus | Indian Flying-fox |
| Pterosauria | Pterosaur |
| Pterygota | Pterygota |
| Pterygotus | Pterygotus |
| Ptiliidae | Ptiliidae |
| Ptiloris | Ptiloris |
| Ptolemais | Ptolemais |
| Ptolomeo | Ptolemy |
| Ptolomeo Cerauno | Ptolemy Keraunos |
| Ptolomeo de Mauritania | Ptolemy of Mauretania |
| Ptolomeo I Sóter | Ptolemy I Soter |
| Ptolomeo II | Ptolemy II Philadelphus |
| Ptolomeo III | Ptolemy III Euergetes |
| Ptolomeo IV | Ptolemy IV Philopator |
| Ptolomeo IX | Ptolemy IX Lathyros |
| Ptolomeo V | Ptolemy V Epiphanes |
| Ptolomeo VI | Ptolemy VI Philometor |
| Ptolomeo VIII | Ptolemy VIII Physcon |
| Ptolomeo X | Ptolemy X Alexander I |
| Ptolomeo XII | Ptolemy XII Auletes |
| Ptolomeo XIII | Ptolemy XIII Theos Philopator |
| Ptolomeo XIV | Ptolemy XIV of Egypt |
| ptomaína | ptomaine |
| Ptono | Phthonus |
| PTP | Picture Transfer Protocol |
| Ptuj | Ptuj |
| Ptychopetalum | Ptychopetalum |
| Ptyonoprogne rupestris | Crag Martin |
| pu ado | handful |
| pu o | fist |
| Pu Songling | Pu Songling |
| Pu-erh | Pu-erh tea |
| puaj | yuck |
| Puan | Puán Partido |
