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 Specific dynamic action (SDA), also known as thermic effect of food (TEF) or dietary induced thermogenesis (DIT), is the amount of energy expenditure above the basal metabolic rate due to the cost of processing food for use and storage. Heat produc ...

, the thermic effect of food * Structured digital abstract, describing relationships between biological entities

Chemistry

* Stearidonic acid, omega-3 fatty acid

Medicine

Serotonin–dopamine antagonist The atypical antipsychotics (AAP), also known as second generation antipsychotics (SGAs) and serotonin–dopamine antagonists (SDAs), are a group of antipsychotic drugs (antipsychotic drugs in general are also known as major tranquilizers and ne ...

, atypical antipsychotic

Physics

Space domain awareness Space domain awareness is the study and monitoring of satellites orbiting the earth. It involves the detection, tracking, cataloging and identification of artificial objects, i.e. active/inactive satellites, spent rocket bodies, or fragmentatio ...

, 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 A scratch drive actuator (SDA) is a microelectromechanical system device that converts electrical energy into one-dimensional motion. Description The actuator component can come in many shapes and sizes, depending on the fabrication method used. ...

, converts electrical energy into motion * Serial Data Signal of an I²C electronic bus * Stereo Dimensional Array, Polk Audio technology *

T-Mobile SDA The HTC Tornado is a smartphone model designed by High Tech Computer Corporation and powered by the Windows Mobile 5 operating system. It has QVGA display resolution. The Tornado is rebranded as at least 9 different models: the Dopod 586W, Qtek 8 ...

, a smartphone

Organizations

Political

* Singapore Democratic Alliance, an alliance of political parties in Singapore *

Social Democratic Alliance (UK) The Social Democratic Alliance (SDA) was a political organisation in the United Kingdom. Foundation The group was founded in June 1975 by councillors and other individuals on the right wing of the Labour Party. Peter Stephenson, the editor of ''S ...

, a former political group in the UK * '' Stranka Demokratske Akcije'', "Party of Democratic Action" in Bosnia and Herzegovina *

Social Democratic Alliance The Social Democratic Alliance ( is, Samfylkingin - jafnaðarflokkur Íslands), officially The Alliance – Iceland's Social Democratic Party, is a social democratic, and pro-European political party in Iceland. The Social Democratic Alliance wa ...

in Vietnam

Others

* SD Card Association, responsible for Secure Digital memory card standards *

Seventh-day Adventist Church The Seventh-day Adventist Church is an Adventist Protestant Christian denomination which is distinguished by its observance of Saturday, the seventh day of the week in the Christian (Gregorian) and the Hebrew calendar, as the Sabbath, and ...

, a Protestant Christian denomination * Shop, Distributive and Allied Employees Association, Australia

Other uses

*Former

Saddam International Airport Baghdad International Airport , previously Saddam International Airport ( ar, مطار بغداد الدولي, Maṭār Baġdād ad-Dawaliyy) is Iraq's largest international airport, located in a suburb about west of downtown Baghdad in the ...

, airport code * Same-day affirmation of financial market deals *

San Diego and Arizona Railway The San Diego and Arizona Railway was a short line U.S. railroad founded by entrepreneur John D. Spreckels, and dubbed "The Impossible Railroad" by engineers of its day due to the immense logistical challenges involved. It linked San Diego, ...

, reporting mark *

SDA Tennis Open The SDA Tennis Open is a tennis tournament held in Bercuit, Belgium since 2012. The event is part of the ATP Challenger Tour and is played on clay court A clay court is one of the types of tennis court on which the sport of tennis, originall ...

, a tournament held in Bercuit, Belgium *

Security & Defence Agenda The Security & Defence Agenda (SDA) was a security and defence think-tank based in Brussels. Its activities included debates, international conferences and a range of publications. In October 2014, most of the activities of the SDA were incorporat ...

, a Brussels-based think-tank *

Severe Disablement Allowance Severe Disablement Allowance (SDA) was a United Kingdom state benefit intended for those below the state pension age who cannot work because of illness or disability. It was replaced by Incapacity Benefit in April 2001, which itself was replaced by ...

, a UK state benefit *

Southern Domestic Airspace 300px, Canadian Tu-95.html" ;"title="CF-18 escorts Soviet Tu-95">CF-18 escorts Soviet Tu-95 bomber, 1987 Canadian airspace is the region of airspace above the surface of the Earth within which Canada has jurisdiction. It falls within a region roug ...

, Canada * Space Development Agency, a DoD RDT&E agency *

Specially denatured alcohol Denatured alcohol (also called methylated spirits in Australia, Canada, Ireland, New Zealand, South Africa, and the United Kingdom; wood spirit; and denatured rectified spirit) is ethanol that has additives to make it poisonous, bad-tasting, foul ...

* Speed Demos Archive of video game speedruns * Swiss Telegraphic Agency (''Schweizerische Depeschenagentur'') * Symbolic data analysis {{disambiguation