| planetario | planetario |
| Planetary Society | Sociedad Planetaria |
| Planetesimo | Planetesimal |
| planetoide | asteroide |
| Plankalkül | Plankalkül |
| Planken | Planken |
| plankton | plancton |
| Planoles | Planolas |
| Plantae | Plantae |
| Plantaginaceae | Plantaginaceae |
| Plantago | Plantago |
| Plantago lanceolata | Plantago lanceolata |
| plantano | plátano |
| Plasencia | Plasencia |
| plasma | plasma |
| Plasma di quark e gluoni | Plasma de quarks-gluones |
| plasma sanguigno | plasma sanguíneo |
| Plasmapausa | Plasmapausa |
| plasmare | formar |
| Plasmi collisionali | Plasma colisionante |
| Plasmi cosmici | Plasma cósmicos |
| Plasmi relativistici | Plasma relativista |
| Plasmide | Plásmido |
| Plasmidi | Plásmido |
| Plasmodesma | Plasmodesmo |
| Plasmodiidae | Plasmodiidae |
| Plasmodium | Plasmodium |
| Plasmodium malariae | Plasmodium malariae |
| Plasmodium vivax | Plasmodium vivax |
| Plasmolisi | Plasmólisis |
| Plasmopara viticola | Plasmopara viticola |
| Plastic Man | Hombre Plástico |
| plastica | plástico |
| plastica riciclabile | plástico reciclable |
| plasticità | plasticidad |
| Plasticitá sinaptica | Neuroplasticidad |
| plastico | maqueta |
| Plastidio | Plasto |
| plastificare | plastificar |
| plastilina | plastilina |
| Plata Quemada | Plata quemada |
| Platalea leucorodia | Platalea leucorodia |
| Platalea minor | Platalea minor |
| Platanista gangetica | Platanistidae |
| platano | plátano |
| Platanthera bifolia | Platanthera bifolia |
| Platanus | Platanaceae |
| Platanus orientalis | Platanus orientalis |
| plateau | meseta |
| Plateau centrale siberiano | Meseta Central Siberiana |
| Plateaux | Plateaux |
| Plateosaurus | Plateosaurus |
| platino | platino |
| Platisma | Platisma |
| Platone | Platón |
| platonico | platónico |
| Platoon | Platoon |
| Platyhelminthes | Platyhelminthes |
| Platyrrhini | Platyrrhini |
| plausibile | seguro |
