SDA

SDA or sda may refer to:

Educational institutions

• San Dieguito Academy, Encinitas, California, US
• SDA Bocconi School of Management, in Milan, Italy

Science and technology

Biology

• Specific dynamic action, the thermic effect of food
• Structured digital abstract, describing relationships between biological entities

Chemistry

• Stearidonic acid, omega-3 fatty acid

Medicine

• Serotonin–dopamine antagonist, atypical antipsychotic

Physics

• Space domain awareness, the ability to detect, track, and characterize passive and active space objects

Technology

• /dev/sda, the first mass-storage disk in Unix-like operating systems
• Screen Design Aid, a utility program used by midrange IBM computer systems
• Scratch drive actuator, converts electrical energy into motion
• Serial Data Signal of an I²C electronic bus
• Stereo Dimensional Array, Polk Audio technology
• T-Mobile SDA, a smartphone

Organizations

Political

• Singapore Democratic Alliance, an alliance of political parties in Singapore
• Social Democratic Alliance (UK), a former political group in the UK
• Stranka Demokratske Akcije, "Party of Democratic Action" in Bosnia and Herzegovina
• Social Democratic Alliance in Vietnam

Others

• SD Card Association, responsible for Secure Digital memory card standards
• Seventh-day Adventist Church, a Protestant Christian denomination
• Shop, Distributive and Allied Employees Association, Australia

Other uses

• Former Saddam International Airport, airport code
• Same-day affirmation of financial market deals
• San Diego and Arizona Railway, reporting mark
• SDA Tennis Open, a tournament held in Bercuit, Belgium
• Security & Defence Agenda, a Brussels-based think-tank
• Severe Disablement Allowance, a UK state benefit
• Southern Domestic Airspace, Canada
• Space Development Agency, a DoD RDT&E agency
• Specially denatured alcohol
• Speed Demos Archive of video game speedruns
• Swiss Telegraphic Agency (Schweizerische Depeschenagentur)
• Symbolic data analysis