| photometer | photomètre |
| Photometric binary stars | Etoile double photometrique |
| Photometric elements | Element photometrique |
| Photometric parallax | Parallaxe photometrique |
| Photometric standard stars | Standard photometrique |
| Photometric system | Système photométrique |
| Photometric systems | Systeme photometrique |
| photon | photon |
| Photon counting systems | Systeme a comptage de photons |
| Photon mapping | Photon mapping |
| Photonic crystal | Cristal photonique |
| Photonics | Photonique |
| Photorealism | Photoréalisme |
| Photoreceptor cell | Photorécepteur |
| photosensitive | photosensible |
| Photosphere | Photosphère |
| photosynthesis | photosynthèse |
| Photosynthetically active radiation | Rayonnement photosynthétiquement actif |
| Photosystem | Photosystème |
| Phototroph | Phototrophie |
| Phototropin | Phototropine |
| Photovisual magnitudes | Magnitude photovisuelle |
| Photovoltaic array | Module solaire photovoltaïque |
| Photovoltaic cells | Cellule photovoltaique |
| PHP | Programmation PHP |
| PHP Extension and Application Repository | PEAR |
| PHP Extension Community Library | PEAR |
| PHP License | Licence PHP |
| PhpMyAdmin | PhpMyAdmin |
| Phraates I of Parthia | Phraatès Ier |
| Phraates II of Parthia | Phraatès II |
| Phraates IV of Parthia | Phraatès IV |
| Phrack | Phrack |
| Phrae | Phrae |
| Phrae Province | Province de Phrae |
| Phragmipedium | Phragmipedium |
| Phragmites | Roseau commun |
| Phragmoplast | Phragmoplaste |
| Phraortes | Phraortès |
| phrasal verb | verbe à particule |
| phrase | expression |
| Phraseological unit | Phrasème |
| phraseology | phraséologie |
| phrasing | rédaction |
| Phreaking | Phreaking |
| Phreatic eruption | Éruption phréatique |
| phrenetic | frénétique |
| phrenology | phrénologie |
| Phrixus | Phrixos |
| Phrygia | Phrygie |
| Phrygian cap | Bonnet phrygien |
| Phrygian mode | Phrygie |
| Phrymaceae | Phrymaceae |
| Phryne | Phryné |
| Phrynohyas | Phrynohyas |
