| Acronym | Meaning |
 | TIMS | Tactical Internet Management System - The Institute Of Management Sciences - The International Molinological Society - Thermal Infrared Multispectral Scanner - Thermal Ionization Mass Spectrometry - Travel Information Management Services - Tuberculosis In |
| ISAAA | International Service For The Acquisition Of Agri-biotech Applications |
| GSS | Generic Security Services |
| SSP | Submarine Transport (retired US Navy Hull Classification) |
| NAU | Nauruan Language (ISO 639-2 Code) |
| SG | Seaborgium |
| SIFF | Successor IFF |
| OSS | Ossetic Language (ISO 639-2 Code) |
| RA | Radium |
| ATAS | Air-To-Air Stinger (missile) |
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