| Acronym | Meaning |
 | EAN(X) | Enriched Air Nitrox |
| CAGE | Cerebral Arterial Gas Embolism |
| AGE | Aterial Gas Embolism |
| EAR | Expired Air Resuscitation |
| HP | High Pressure |
| PDIC | Professional Diving Instructors Corporation International; Diving Instruction Organization. |
| MDL | No Decompression Limit |
| HSE | Health And Safety Executive |
| BWRAF | Buoyancy |
| OWIC | Open Water Instructor Course (BSAC) |
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