PDE

'''PDE''' may refer to:

==Mathematics== *Partial differential equation, differential equation involving partial derivatives (of a function of multiple variables)

==Life sciences== * Phosphodiesterase, enzyme important in intracellular communication * Pug dog encephalitis

==Organizations== * The European Democratic Party (esp. in Spanish, French or Italian languages) *The Pennsylvania Department of Education

==Technology and engineering== * Program development environment *Pulse detonation engine, proposed substitute to the traditional jet engine <!-- does this differ from an engine of a pulsejet? -->

==Philosophy== * Principle of double effect

==Places== *Punta del Este

==Other modes of abbreviation== * Polydichloric euthimal, fictional substance <!-- in a fraud? in a titled work? --> * Pde (or Pde.), "Parade" (when serving as part of the proper name of a street or other way) * Present Day English * Preliminary Determination of Epicenters, the final earthquake bulletin of the National Earthquake Information Center (NEIC)

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