Wafer-scale integration
Wafer Scale Integration
Warfare Studies Institute
Weapon System Integration
Weather Service, Inc.
Weather Services International
Weather Severity Index
whole-sky imager
Wireless Systems International
Waardenburg syndrome type I
Wackenhut Services, Inc.
Walter-Schottky-Institut
Warfare Systems Integration
Washington Square Institute
Waste stream identification
Water Safety Instructor
Water Security Initiative
water sediment interface
Water Solidity Index
Wave-Sediment Interaction
Weapon System Integrator
Weapons School of Intelligence
Weapons Systems Interface
Weather Service International
Weather Service, Incorporated
Web Service Internediary
Web Service Interoperability
Web Services Interop
Web Services Interoperability
Wind Spirit Air