| Acronym | Meaning |
 | IICA | Inter-American Institute For Cooperation On Agriculture |
| WIPP | [Nuclear] Waste Isolation Pilot Project |
| CRI | Costa Rica (ISO 3166 Trigram) |
| TZA | Tanzania (ISO 3166 Trigram) |
| LUCA | Last Universal Common Ancestor |
| TATP | TriAcetone TriPeroxide |
| PLGR | Precision Lightweight GPS Receiver (plugger) |
| ROFL(MAO) | Rolling On The Floor Laughing (My Ass Off) |
| SIC | Standard Industrial Classification |
| HL | Holding Line |
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