| Acronym | Meaning |
 | NCA | National Command Authority |
| TNT | TriNitroToluene |
| TINY | That Is |
| WS | Samoa (ISO 3166 And FIPS 10-4 Country Code Digram; From West Samoa) -Writer To The Signet (a Scottish Solicitor) |
| HI | Hawaii (postal Symbol) |
| SPDT | Single-Pole Double-Throw |
| NP | Nepal (ISO 3166 And FIPS 10-4 Country Code Digram) |
| DFID | UK Department For International Development |
| SNU | Solar Neutrino Unit |
| 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 |
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