The meaning of the Acronym PD is...

PD is

• Positive Deployment (Exercise Name)
• Program Director
• Process Data
• Per Diem
• Primary Detection
• Point of Departure
• Pure Devastation
• Port Director
• Post Destruction
• Periscope Depth

More Meanings For PD:

• Participatory Design
• Projective Dimension
• Pressure Down
• Pipe Duct
• Production Drawing
• Palladium
• Phase-change Device
• Projective Dimension
• Propagation Delay
• Polarization Difference
• Poincare Duality
• Please Dad
• Partial Derivative
• Prisoner's Dilemma
• Project Director

PD is also in:

• Architecture
• Chemistry
• Mathematics
• Meteorology
• Physics
• Universities