| Acronym | Meaning |
 | PCP | Phencyclidine - Pneumocystis Jiroveci Pneumonia (formerly Peumocystis Carinii) -Probabilistically Checkable Proof |
| SPS | Standard Positioning Service (GPS) |
| PPLI | Precise Participant Location & Identification |
| FR | Francium |
| HE | Helium |
| CBR | Case-Based Reasoning |
| UAH | Ukrainian Hryvnia (ISO 4217 Currency Code) |
| GLP | Guadeloupe (ISO 3166 Trigram) |
| METT | TC -Mission |
| APOLLO | Apache Point Observatory Lunar Laser-ranging Operation |
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