Governmental & Military Abbreviations and Acronyms

1. SHADR
   Short-Range Air Defense Radar
2. SIBYL
   Synergistic Image Building Yttrium LADAR
3. SICCGS
   Surrender Is Cowardice; Cowards Get Shot
4. SIDNK
   Sir, I Do Not Know
5. SIGACTS
   Significant Activities
6. SIMUTA
   Simulation for Multiple Unit Training Assemblies
7. SIMWIN
   Simulated Workstation Input
8. SIMWOUT
   Simulated Workstation Output
9. SINCGARS-SIP
   Single Channel Ground and Air(borne) Radio System - System Improvement Program
10. SIOP-ESI
    Single Integrated Operational Plan-Extremely Sensitive Information
11. SIQ
    National Center for Atmospheric Research
12. SIQ
    Sick In Quarters
13. SIRADS
    Stored Imagery Repository and Dissemination System
14. SIRCS
    Shipboard Intermediate Range Combat System
15. SIRCUS
    Standard Information Retrieval Capability for Users
16. SIRMO
    Senior Information Resources Management Official
17. SIRRA
    Sleep-Induction/Rapid Re-Awakening
18. SISMS
    Standard Integrated Support Management System
19. SITAP
    Simulation for Transportation Analysis and Planning
20. SITEREP
    Situation Report

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