| Acronym | Meaning |
 | PH.D. | Philosophi? Doctor (Latin |
| FRA | French Language (ISO 639-2 Code) |
| LDC | Lesser Developing/Developed Country |
| 4D | Four-dimensional (usually Three Spatial Plus One Temporal Dimension |
| MCSF | Marine Corps Security Forces |
| GB | Gabon (FIPS 10-4 Country Code) - United Kingdom Of Great Britain And Northern Ireland (ISO 3166 Digram) |
| LTU | Lithuania (ISO 3166 Trigram) |
| ISCII | Indian Standard Code For Information Interchange |
| SASE | Self-Addressed Stamped Envelope |
| INSAR | Interferometric Synthetic Aperture Radar |
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