The meaning of the Acronym PST is...

PST is

• Preliminary Service Testing
• Psychological Skills Training

More Meanings For PST:

• Personal Storage Template
• Paste buffer ( Lahey Fortran)
• Microsoft Outlook Personal Folder File
• Postbox file ( BMail)
• Please Send Tell
• Priority Search Tree
• Pipeline Security Technology
• Product Support Tool
• Post Second Time
• Pants Seeking Time
• Personal Solar Telescope
• Pagan Standard Time
• Price Swindling Tax
• Pretty Stupid Technology
• Primary Secondary Tertiary

PST is also in:

• Astronomy
• Chat
• Databases
• File Extensions
• Funnies
• Networking
• Security
• Software
• Unfiled