SDA or sda may refer to:

Science and technology

Computing

* /dev/sda, the first mass-storage disk in Unix-like operating systems * T-Mobile SDA, a smartphone * Screen Design Aid, a utility program used by midrange IBM computer systems * SD Card Association, responsible for Secure Digital memory card standards * Serial Data Signal of an

I²C I2C (Inter-Integrated Circuit; pronounced as "" or ""), alternatively known as I2C and IIC, is a synchronous, multi-master/multi-slave, single-ended, serial communication bus invented in 1980 by Philips Semiconductors (now NXP Semiconduct ...

electronic bus *

Slow DoS attack The term slow DoS attack (SDA) was introduced in 2013, to clearly define a specific category of denial-of-service attacks which make use of low-bandwidth rate to accomplish their purpose. Similar terms can be found in literature, such as: * applic ...

* Symbolic data analysis

Life sciences

Sabouraud dextrose agar Sabouraud agar or Sabouraud dextrose agar (SDA) is a type of agar growth medium containing peptones. It is used to cultivate dermatophytes and other types of fungi, and can also grow filamentous bacteria such as ''Nocardia''. It has utility for ...

, microbiological media allows fungus to grow * Serotonin–dopamine antagonist, atypical antipsychotic * Specific dynamic action, the thermic effect of food *

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

, omega-3 fatty acid * Structured digital abstract, describing relationships between biological entities

Other uses in science and technology

* Scratch drive actuator, a microelectromechanical device *

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 Space debris, ...

, the ability to detect, track, and characterize passive and active space objects * Stereo Dimensional Array, a

Polk Audio Polk Audio, Inc. 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 is in ...

technology

Organizations

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 Encinitas, California. It is part of San Dieguito Union High School District. The school was esta ...

, Encinitas, California, US *

SDA Bocconi School of Management SDA Bocconi School of Management (SDA standing for Scuola di Direzione Aziendale) was founded in 1971 and is the graduate business school of Bocconi University in Milan and Rome, Italy. SDA Bocconi is Triple accreditation, triple accredited by t ...

, in Milan, Italy

Political groups

Secular Democratic Alliance Secular Democratic Alliance or Sanjukta Morcha is a political alliance formed ahead of the 2024 Indian general election in West Bengal by the Left Front (West Bengal), Left Front and the Indian National Congress in opposition to the Trinamool C ...

(India) *

Singapore Democratic Alliance The Singapore Democratic Alliance (SDA) is a political coalition between the Singapore Malay National Organization (PKMS), and Singapore Justice Party (SJP). The SDA was formed in 2001 and initially consisted of four political parties, PKMS, S ...

* Social Democratic Alliance (UK) * ''

Stranka demokratske akcije The Party of Democratic Action (; 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, as a "party of Muslim cultural ...

'' ("Party of Democratic Action"), in Bosnia and Herzegovina *

Social Democratic Alliance The Social Democratic Alliance (, ) is a Social democracy, social democratic List of political parties in Iceland, political party in Iceland. The party is positioned on the Centre-left politics, centre-left of the political spectrum and their ...

in Vietnam *

South Devon Alliance The South Devon Alliance (SDA) was a short-lived minor political party in Teignbridge District, Devon, England. History The South Devon Alliance was founded on 23 March 2021. It had emerged out of the "Newton Says No" group, who campaigned to ...

in England *

Party of Democratic Action of Sandžak The Party of Democratic Action of Sandžak (, , SDAS) is a political party in Serbia, representing the Bosniak ethnic minority concentrated in Sandžak region. History The Party of Democratic Action of Sandžak (SDA) was founded on 29 July ...

(''Stranka demokratske akcije Sandžaka''), a political party in Serbia

Other organizations

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 *

Seventh-day Adventist Church The Seventh-day Adventist Church (SDA) 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 Sa ...

, a Protestant Christian denomination *

Shandong Airlines Shandong Airlines Co., Ltd. (; nicknamed SDA or ) is an airline based in the Shandong Airlines Center () in Jinan, Shandong. The Chinese carrier operates a sizable domestic network from Jinan, Qingdao and Yantai to major cities across China, toge ...

, an airline in China *

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

, Australia *

Southern Dames of America The National Society Southern Dames of America (often abbreviated as SDA or NSSDA) is a lineage society and charitable organization for women of Southern United States, Southern heritage that supports Ophthalmology, ophthalmic research and promote ...

, lineage society in the United States *

Space Development Agency The Space Development Agency (SDA) is a United States Space Force direct-reporting unit tasked with deploying disruptive space technology.SDA.miAbout Us One of the technologies being worked on is space-based missile tracking using large global s ...

, a US DoD RDT&E agency * Systemic Design Association, for systems design *

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 nati ...

(''Schweizerische Depeschenagentur'')

Other uses

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

, a tournament held in Bercuit, Belgium * Saddam International Airport, airport code SDA *

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 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 *

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 *

Specially denatured alcohol Denatured alcohol, also known as methylated spirits, metho, or meths in Australia, Ireland, New Zealand, South Africa, and the United Kingdom, and as denatured rectified spirit, is ethanol that has additives to make it poisonous, bad-tasting, f ...

Speed Demos Archive Speed Demos Archive (SDA) is a website dedicated to video game speedruns. SDA's primary focus is hosting downloadable, high-quality speedrun videos, and currently has runs of over eleven hundred games, with more being added on a regular basis. S ...

of video game speedruns {{disambiguation