| proton conduction | Protonenleitung |
| Proton decay | Protonenzerfall |
| Proton exchange membrane fuel cell | Polymerelektrolytbrennstoffzelle |
| proton exchange membrane fuel cell , PEMFC | Protonenaustauschmembran-Brennstoffzelle |
| proton gradient | Protonengradient |
| proton gradient energy coupling | Protonengradienten-Energiekopplung |
| proton input | Protoneneintrag |
| proton magnetometer | Protonenmagnetometer |
| proton microscope | Protonen-Mikroskop |
| proton precession | Protonenpräzession |
| proton precession magnetometer , PPM | Protonen-Präzessions-Magnetometer , PPM |
| Proton pump | Protonenpumpe |
| Proton pump inhibitor | Protonenpumpenhemmer |
| proton pump inhibitor , PPI | Protonenpumpenhemmer |
| proton pumping activity | Protonenpumpenaktivität |
| proton pumps | Protonenpumpen |
| proton radiation therapy | Protonenstrahlentherapie |
| proton rest mass | Protonenruhemasse |
| Proton rocket | Proton |
| proton scattering microscope | Protonenstreuungs-Mikroskop |
| proton synchrotron | Protonensynchrotron |
| proton therapy | Protonentherapie |
| proton-exchange membrane fuel cell , PEMFC | Protonenaustauschmembran-Brennstoffzelle |
| proton-free | protonenfrei |
| proton-implanted laser | protonenimplantierter Laser |
| proton-induced | protoneninduziert |
| proton-proton chain | Wasserstoffbrennen |
| Proton-proton chain reaction | Proton-Proton-Reaktion |
| proton-pump inhibitor , PPI | Protonenpumpenhemmer |
| proton-translocating ATPase | H+-ATPase |
| proton-translocating ATPases | H+-ATPasen |
| protonate sth. | etw. protonieren |
| protonated | protoniert |
| Protonation | Protonierung |
| protonic ceramic fuel cell , PCFC | protonische Keramik-Brennstoffzelle |
| Protonotary apostolic | Apostolischer Protonotar |
| protons | Protonen |
| protonym | Protonym |
| protopathic | idiopathisch |
| protophilic | protonenaufnehmend |
| protophilic solvent | protonenaufnehmendes Lösungsmittel |
| protoplanet | Protoplanet |
| protoplanetary | protoplanetar |
| protoplanetary disc | protoplanetare Scheibe |
| Protoplanetary disk | Protoplanetare Scheibe |
| protoplanetary nebula | protoplanetarischer Nebel |
| protoplanets | Protoplaneten |
| protoplasm | Protoplasma |
| protoplasmatic | aus Protoplasma bestehend |
| protoplasmic | protoplasmisch |
| protoplasmic astrocytoma | faserarmes Astrozytom |
| protoplast | Protoplast |
| protoprinting | Prototypdruck |
| Protopterus | Afrikanische Lungenfische |
| Protopunk | Protopunk |
| protorosaur | Protorosaurier |
| protorosaurus | Protorosaurier |
| Protoscience | Proto-Wissenschaft |
| protostar | Protostern |
| protostellar | protostellar |
| Protostome | Urmünder |
| Prototaxites | Prototaxites |
| Prototheria | Ursäuger |
| prototypal | archetypisch |
