| Acronym | Meaning |
 | TDRS | Tracking Data And Relay Satellite |
| UMBC | University Of Maryland Baltimore County |
| ASL | Above Sea Level - American Sign Language (also Known As Ameslan) - Age |
| PPO | PolyPhenylene Oxide |
| TR | Turkish Language (ISO 639-1 Code) |
| HR | Croatia (FIPS 10-4 Country Code; ISO 3166 Digram) -Harvard Revised Star Catalogue - Human Resources |
| LRP | Logistics Release Point |
| WFD | Weaponof Focused Destruction |
| LTU | Lithuania (ISO 3166 Trigram) |
| IR | Iridium |
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