PDE
PDE is an abbreviation for:
- Partial Differential Equation , see Partial Differential Equation
- Phosphodiesterase
- Prague-Dux Railway , former Austrian railway company
- Pulse Detonation Engine , see Detonation Engine #Pulse Detonation Engine
- Pump-nozzle injection , see pump-nozzle system
- Pyridoxine-dependent epilepsy
