| Acronym | Meaning |
| IDC | Instructor Development Course (PADI) |
| IAND | International Association Of Nitrox Divers |
| IDEA | International Diving Educators Association; Diving Instruction Organization. |
| CAGE | Cerebral Arterial Gas Embolism |
| DEMA | Diving Equipment Manufacturers Association |
| BWRAF | Buoyancy |
| DIN | Deutsches Insitut Fuer Normung |
| LP | Low Pressure |
| MDL | No Decompression Limit |
| ATA | Atmospheres Absolute |