| Acronym | Meaning |
 | MHHW | Mean Higher High Water (nautical Charts) |
| PCMCIA | Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms) |
| SGP | Singapore (ISO 3166 Trigram) |
| ASX | Advanced Stream Redirector - Australian Stock Exchange |
| LBH | Light Battlefield Helicopter - Lyman-Birge-Hopfield Bands |
| D | Deuterium |
| NSA | U.S. National Security Agency - Naval Support Activity - No Strings Attached |
| PLIF | Planar Laser-Induced Fluorescence |
| USNH | United States Naval Hospital |
| AFQT | Armed Forces Qualification Test |
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