Governmental & Military Abbreviations and Acronyms
- PSTDPost Traumatic Stress Disorder
- PSTDPAYMASTER'S STEWARD
- PSTIACPavements and Soil Trafficability Information Analysis Center
- PSTNPublic Switched Telephone Network
- PSTNPublic Switched Telecommunications Network
- PSTSPayload Module Structure Subsystem
- PSUPower Supply Unit
- PSUPassenger Service Unit
- PSUPolice Standards Unit
- PSUPublic Sector Union
- PSUPersonal Service Units
- PSU''Pennsylvania State University''
- PSUPolice Support Unit
- PSUProfessional Skaters Union
- PSVPersonal Security Vehicle
- PSVPolice Support Volunteer
- PSVPlanetary Space Vehicle
- PSVPublic Service Vehicle (bus driver's license in GB)
- PSVPassenger Service Vehicle
- PSWProgram Status Word
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