The meaning of the Acronym PD is...

PD is

• Pressure Defense
• Passes Defended

More Meanings For PD:

• Participatory Design
• Projective Dimension
• Pressure Down
• Pipe Duct
• Production Drawing
• Palladium
• Positive Displacement
• Power Density
• Phase-Change Device
• Pin Diode
• Potential Difference
• Pre-Damper
• Position Difference
• Proportional Derivative
• Parameter Descriptor

PD is also in:

• Architecture
• Chemistry
• Electronics
• Geology
• Mathematics