Governmental & Military Abbreviations and Acronyms

1. SIGINT
   Signals Intelligence
2. SIGIR
   Special Inspector General for Iraq Reconstruction
3. SIGMA
   Sky Aircraft Service
4. SIGMET
   Significant Meteorological Information
5. SIGMET
   Significant Meteorological Advisory
6. SIGNAL
   System Integrating Gps To Nullify Absence and Lateness
7. SIGS
   Signals
8. SIGSEC
   Signal Security
9. SII
   The Standards Institutetution of Israel
10. SII
    Science Information Infrastructure
11. SIIP
    Site Integration Installation Plan
12. SIIP
    Springfield Interchange Improvement Project
13. SIIS
    Shanghai Institute for International Studies
14. SIJ
    Special Immigrant Juvenile
15. SIK
    Sanity In Killing
16. SIL
    Silent
17. SIL
    Servicios Aeronauticos Integrales
18. SIL
    Son-In-Law
19. SIL
    Systems Integration Laboratory
20. SIL
    System Integration Laboratory

Last updated: May 24, 2020 — Total entries: 74,797