| AAS | Atomic Absorption Spectrophotometry |
|---|---|
| APS | Advanced Photo System (skr.) |
| APS | Advanced Photo System, formát filmu |
| EPA | European Photochemistry Association |
| EPA | European Pressphoto Agency |
| PAR | Photosynthetically Active Radiation |
| PZT | Photo Zenit Teleskope (skr.) |
| RPH | radphot (zn.) |
| TLP | two long photo (skr.) |