The meaning of the Acronym PBL is...

PBL is

• Philadelphia Belt Line Railroad Company

More Meanings For PBL:

• Poly-Buffered LOCOS
• Planetary Boundary Layer
• Pestka Biomedical Laboratories
• Problem Based Learning
• Project Based Learning
• Psychedelic Boom A Loom
• Powerbasic library (Genus)
• Product BaseLine
• Performance Based Logistics
• Product BaseLine
• Payload Bay Liner
• Performance-Based Logistics
• Product BaseLine
• Peripheral Blood Leukocytes
• Peripheral Blood Lymphocytes

PBL is also in:

• Educational
• Electronics
• File Extensions
• Firms
• Law
• Military
• NASA
• Ocean Science
• Physiology
• Transportation
• US Government