| Acronym | Meaning |
 | PK | Picokelvin |
| IRL | Ireland (ISO 3166 Trigram) - Industrial Research Limited |
| GULCR | Grupo De Usuarios De Linux De Costa Rica |
| LAAS | Local Area Augmentation System - Los Angeles Astronomical Society |
| UG | Uganda (ISO 3166 And FIPS 10-4 Country Code Digram) |
| SNG | Satellite News Gathering (television) |
| DRL | Daytime Running Lights - Dorman Roberts Ltd. |
| SERE | Survival |
| TCWMS | Tele-Center Workforce Management System |
| FAQ | Frequently Asked Questions (sometimes Pronounced Fak) |
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