| Acronym | Meaning |
 | AIR | Aircraft Inventory Record |
| OTC | Over-The-Counter (drugs) |
| IVL | Inter-Visibility Line |
| AMSAA | U.S. Army Materiel Systems Analysis Activity |
| OARSI | Osteoarthritis Research Society International |
| PC | Picocoulomb |
| CISB | Complete In Sealed Box (Internet Auction/trading Listings) |
| ACINT | Acoustic Intelligence |
| PAL | Phase Alternating Line (TV Standard) -Philippine Airlines |
| DOI | Digital Object Identifier - U.S. Department Of The Interior |
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