| Acronym | Meaning |
 | PEBKAC | Problem Exists Between Keyboard And Chair (ditto) |
| TDMA | Time Division Multiple Access |
| ZG | Zeptogram |
| IR | Infrared - Intelligence Requirement (military) -Iran (FIPS 10-4 Country Code; ISO 3166 Digram) - Iran Air (IATA Alpha Code) See Entry For More |
| IMSA | Illinois Mathematics And Science Academy - International Mind Sports Association - International Motor Sports Association |
| COTS | Commercial Off The Shelf |
| NV | Nevada (postal Symbol) |
| HESV | Heavy Engineering Support Vehicle |
| QUANGO | (British Commonwealth) QUasi Autonomous Non-Governmental Organisation |
| BTN | Bhutan (ISO 3166 Trigram) - Bhutanese Ngultrum (ISO 4217 Currency Code) |
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