sda
SDA or sda may refer to:
Biology
- Specific dynamic action, the thermic effect of food
- Structured digital abstract, describing relationships between biological entities
Chemistry
- Stearidonic acid, omega-3 fatty acid
Educational institutions
- San Dieguito Academy, Encinitas, California, US
- SDA Bocconi School of Management, in Milan, Italy
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
Others
- SD Card Association, organization responsible for Secure Digital memory card standards
- Seventh-day Adventist Church, a Protestant Christian denomination
- Shop, Distributive and Allied Employees Association, the largest trade union in Australia
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
- Serial Data Signal of an I²C electronic bus
- Stereo Dimensional Array, a technology for enhanced spatial sound resolution by Polk Audio
- T-Mobile SDA, a smartphone
Other uses
- Speed Demos Archive, a website dedicated to video game speedruns
- SDA Tennis Open, a tennis tournament held in Bercuit, Belgium
- Saddam International Airport, airport code
- Service Dogs Of America, working dog sport
- Same-day affirmation of financial market deals
- San Diego and Arizona Railway, reporting mark
- Swiss Telegraphic Agency (Schweizerische Depeschenagentur), the national press agency of Switzerland
- Security & Defence Agenda, a Brussels-based think-tank
- Severe Disablement Allowance, a United Kingdom state benefit
- Southern Domestic Airspace, a division of Canadian airspace
- Specially denatured alcohol
- Symbolic data analysis, a statistical approach to imprecise data