PDE may refer to:
MathematicsEdit
- Partial differential equation, differential equation involving partial derivatives (of a function of multiple variables)
Life sciencesEdit
- Phosphodiesterase, enzyme important in intracellular communication
- Pug dog encephalitis
OrganizationsEdit
- The European Democratic Party (esp. in Spanish, French or Italian languages)
- The Pennsylvania Department of Education
Technology and engineeringEdit
- Program development environment
- Pulse detonation engine, proposed substitute to the traditional jet engine
PhilosophyEdit
PlacesEdit
Other modes of abbreviationEdit
- Polydichloric euthimal, fictional substance
- Pde (or Pde.), "Parade" (when serving as part of the proper name of a street or other way)
- Present Day English