The meaning of the Acronym PSS is...

PSS is

• Portable Spacecraft Simulator
• Propulsion Support System
• Propellant Supply Subsystem
• Payload Support System
• Payload Specialist Station
• Pad Safety Supervisor

More Meanings For PSS:

• Product Support Services
• Power System Stabilizer
• Probabilistic Signature Scheme
• Process Server Software
• Phone Search Space
• Personal Sound Studio
• Practical Salinity Scale
• Problem for Self Study
• Planetary Star Ship
• Periodic Spin Structure
• Play Some Shit
• Participants Support System
• Plaintiffs Separate Statement
• Physics Selection Strategy
• Personal Scheduler For Student

PSS is also in:

• Drivers
• Electronics
• Hardware
• Ocean Science
• Science Fiction
• Security
• Software
• Telecom
• Unfiled
• Universities