| Acronym | Meaning |
 | AMDT | Adjusted Maximum Dive Time |
| MSD | Master SCUBA Diver (PADI) |
| AD | Adventure Diver (PADI) Advanced Diver (BSAC) |
| PP | Partial Pressure |
| MDL | No Decompression Limit |
| OWIC | Open Water Instructor Course (BSAC) |
| TO | Training Officer (BSAC) |
| SAA | Sub-Aqua Association |
| SCUHA | Self-contained Underwater Heating Apparatus (urinating In Your Wet Suit). |
| NITROX | Any Gas Mixture Of Nitrogen And Oxygen; Though Most Commonly Used For Oxygen Mixtures Above The Normal 21 Per Cent. |
Browse by Letter:
