SDE

SDE can stand for:

In science, medicine, and technology

• Screen door effect, a video display issue
• Sebacoyl dinalbuphine ester, an analgesic
• Semantic dictionary encoding
• Software development engineer
• Software development environment
• Spatial Database Engine (ArcSDE)
• Spectral density estimation
• Stochastic differential equation
• sub-divisional error, a read head error mechanism
• System development environment

In politics

• Social Democratic Party (Estonia)
• State delegate equivalents, a part of the Iowa caucuses § Democratic Party

In transportation

• The IATA code for Vicecomodoro Ángel de la Paz Aragonés Airport, an airport in Argentina
• Senai–Desaru Expressway, an expressway in Johor, Malaysia
• Shadwell railway station, a railway station in London, England

Other uses

• S.D.E., a 2000 album by Cam'ron
• Self Defined Ethnicity, an ethnic classification code used by the British government and police
• Self-directed education, self-learning, often synonymous with unschooling
• Strong-side defensive end, a position in American football