| Acronym | Meaning |
 | PC | Petacoulomb - U.S. Pacific Islands Trust Territory (ISO 3166 Digram; Obsolete 1986) -Personal Computer - Player Character (roleplaying) - Politically Correct / Political Correctness - Post Cibum (Latin |
| MLB | Major League Baseball |
| LIE | Liechtenstein (ISO 3166 Trigram) |
| SABR | Society For American Baseball Research |
| AAI | Applied Artificial Intelligence |
| CD | Many |
| C2D OR C?D | Intel Core 2 Duo - CERDEC Command And Control Directorate |
| FRICBM | Full Range ICBM |
| OSIA | (U.S.) On-Site Inspection Agency |
| SEN | Senegal (ISO 3166 Trigram) -Small Extension Node |
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