| Acronym | Meaning |
 | LCCP | Light Contingency Communications Package |
| IR | Infrared - Intelligence Requirement (military) -Iran (FIPS 10-4 Country Code; ISO 3166 Digram) - Iran Air (IATA Alpha Code) See Entry For More |
| FM | Federal Magistrate (Australian Post-nominal) -Federated States Of Micronesia (postal Symbol; ISO 3166 Digram; FIPS 10-4 Territory Code) -Field Manual - Flight Manager - Frequency Modulation (electronics) |
| ZS | Zettasecond |
| LX | Luxembourg (amateur Radio ITU Prefix) - Swiss International Airlines (IATA Code) |
| RIS | Range Instrumentation System |
| LKA | Sri Lanka (ISO 3166 Trigram) |
| INSAR | Interferometric Synthetic Aperture Radar |
| FCW | Florida Championship Wrestling |
| AGP | Accelerated Graphics Port |
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