| Acronym | Meaning |
 | USD(A&T) | (U.S.) Under-Secretary Of Defense (Acquisition And Technology) |
| RJD | Reduced Julian Day |
| HA | Hausa Language (ISO 639-1 Code) - Hectare |
| NICAP | National Investigations Committee On Aerial Phenomena |
| AF | Attofarad |
| ORI | Oriya Language (ISO 639-2 Code) |
| RDD | Radiological Dispersion Device |
| CSICOP | Committee For The Scientific Investigation Of Claims Of The Paranormal (became The Committee For Skeptical Inquiry In 2006) |
| IIRC | If I Recall/Remember Correctly |
| ICNAF | International Commission For The Northwest Atlantic Fisheries (became NAFO In 1978) |
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