SDA or sda may refer to:

Educational institutions

San Dieguito Academy San Dieguito High School Academy, originally known as San Dieguito Union High School and San Dieguito High School, is a public high school in the San Dieguito Union High School District of Encinitas, California in San Diego County. The scho ...

, Encinitas, California, US *

SDA Bocconi School of Management SDA Bocconi School of Management (SDA standing for Scuola di Direzione Aziendale) is the graduate business school of Bocconi University. It is the leading School of Management in Italy and also stands among the top-ranked European institutions. ...

, 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 Stearidonic acid (SDA: C18 H28 O2; 18: 4, n-3) is an ω-3 fatty acid, sometimes called moroctic acid. It is biosynthesized from alpha-linolenic acid (ALA: C18H30O2; 18:3, n-3) by the enzyme delta-6-desaturase, that removes two hydrogen (H) ato ...

, 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 I2C (Inter-Integrated Circuit, ), alternatively known as I2C or IIC, is a synchronous, multi-controller/multi-target (master/slave), packet switched, single-ended, serial communication bus invented in 1982 by Philips Semiconductors. It is w ...

electronic bus * Stereo Dimensional Array,

Polk Audio Polk Audio is an American manufacturer of audio products best known for its home and automobile speakers. The company also produces a wide range of other audio products, such as amplifiers and FM tuners. The company's headquarters are in San D ...

technology * T-Mobile SDA, a smartphone

Organizations

Political

Singapore Democratic Alliance The Singapore Democratic Alliance ( abbreviation: SDA) is a political coalition between the National Solidarity Party (NSP) and Singapore Justice Party (SJP) in Singapore. History Prior to the founding in 2001, then-opposition Member of Pa ...

, 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 The Party of Democratic Action ( bs, Stranka demokratske akcije; abbr. SDA) is a Bosniak nationalist, conservative political party in Bosnia and Herzegovina. History The Party of Democratic Action (SDA) was founded on 26 May 1990 in Sarajevo, ...

'', "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 w ...

in Vietnam

Others

SD Card Association The SD Association (SDA) is an American nonprofit organization that sets standards for the SD memory card format. SanDisk, Panasonic (Matsushita) and Toshiba formed the SD Association in January 2000. In 2010, the SDA had approximately 1,000 mem ...

, responsible for Secure Digital memory card standards *

Seventh-day Adventist Church The Seventh-day Adventist Church is an Adventism, Adventist Protestantism, Protestant Christian denomination which is distinguished by its observance of Saturday, the Names of the days of the week#Numbered days of the week, seventh day of the ...

, a Protestant Christian denomination *

Shop, Distributive and Allied Employees Association The Shop, Distributive and Allied Employees' Association (SDA) is the largest private sector trade union in Australia, representing retail, fast-food and warehousing workers, and has branches in every state and territory. Its membership is pr ...

, 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 In securities trading, same-day affirmation (SDA) also known as T0 refers to completing the entire trade verification process on the same day that the actual trade took place, and was invented in the early '90s by James Karat, the inventor of strai ...

of financial market deals *

San Diego and Arizona Railway The San Diego and Arizona Railway was a Short-line railroad, short line United States, U.S. railroad founded by entrepreneur John D. Spreckels, and dubbed "The Impossible Railroad" by engineers of its day due to the immense logistical challeng ...

, 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, 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 b ...

, a UK state benefit * Southern Domestic Airspace, Canada *

Space Development Agency The Space Development Agency (SDA) began as a directorate of the United States Department of Defense's office of the under secretary of defense for research and engineering ( OUSD (R&E)) which supports space development in the interests of U.S. ...

, 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 The Swiss Telegraphic Agency (German: ''Schweizerische Depeschenagentur'', SDA; French: ''Agence télégraphique suisse'', ATS; Italian: ''Agenzia telegrafica svizzera'', ATS; branded as Keystone-SDA/Keystone-ATS since 27 April 2018) is the natio ...

(''Schweizerische Depeschenagentur'') * Symbolic data analysis {{disambiguation