| Acronym | Meaning |
| TSR | Many |
| APOLLO | Apache Point Observatory Lunar Laser-ranging Operation |
| TACDAR | Tactical Detection And Reporting |
| IAAF | International Association Of Athletics Federations (International Amateur Athletics Federation From 1912-2001) |
| PPASC | (U.S.) Plans And Program Analysis Support Center |
| CF. | Confer (Latin Compare |
| CK | Cocos (Keeling) Islands (FIPS 10-4 Country Code) - Cook Islands (ISO 3166 Digram) |
| BAI | Battlefield Air Interdiction |
| UID | User ID |
| TEVES | Tensor Vector Scalar Theory |