The meaning of the Acronym PL is...

PL is

• Prelaunch
• Postlanding (P/L preferred)
• Plug
• Plate
• Payload (P/L preferred)

More Meanings For PL:

• Program Line
• Harvard Graphics Palette
• Perl script language source code file
• Prolog language source code file
• TeX Property List font metric file
• Procedure Library
• Page Length
• Power Loss
• Program Location
• Packet Loss
• Print Local
• Processing Layer
• Programming Language
• Procedural Language
• Portable Level

PL is also in:

• Assembly
• File Extensions
• General
• Networking
• Software