The meaning of the Acronym PM is...

PM is

• Pocket Message
• Private Messaging
• Personal Message

More Meanings For PM:

• X Window PixelMap 8-bit text Bitmap graphics
• Presentation Manager Bitmap graphics file
• Perl
• Personal Mobility
• Partial Match
• Personal Mainframe
• Protected Mode
• Private Mail
• Product Manual
• Pikon Message
• Production Metadata
• Pattern Match
• Power Mac
• Physical Memory
• Peg Material

PM is also in:

• File Extensions
• General
• Hardware