Abbreviations & Acronyms Dictionary

Observatory, Telescope and Instrument Software
Offender Tracking Information System
Office of Technology and Information Systems
Office of Telecommunications and Information Systems
Office of Transportation/Interpreter Services
Office of Treatment and Intergovernmental Servies
Oklahoma Telecommunications Interlibrary System
Once-through integral system
Online Technical Information System
Online Telecommunications Information System
Operating TDA Information System
Operational Targeting Intelligence System
Operations and Tactics Integration Suite
Optimal Thermal Interpolation System
Optimal Trajectories by Implicit Simulation
Optothermal infrared spectrometry
Ordnance Technical Intelligence Service
Ordnance telemetry instrumentation station
Overhead Travel Information System
Overseas Technology Information Service