(Main list of acronyms) d – (s) Deci D – (s) Deuterium DA da – (s) Danish language (ISO 639-1 code) – deca DA – (s) Denmark (FIPS 10-4 country code) – (i) Debtors Anonymous – (i) U.S. Department of the Army – District Attorney DAB – Digital Audio Broadcasting DACT – (i) Data Automated Communications Terminal – Dissimilar Air Combat Training DADVSI – (i) Loi sur le droit d’auteur et les droits voisins dans la société de l’information (French, "Law on copyrights and related rights in the information society") DAES – (i) Defence Acquisition Executive Summary – (UK MoD) Directorate of Analysis, Experimentation and Simulation DAF – (a) Dissolved Air Flotation, a technique used in water treatment DAFIF – (a) Digital Aeronautical Flight Information File DAK – (a) Disney's Animal Kingdom DA&M – (i) (U.S.) Director, Administration & Management dan – (s) Danish language (ISO 639-2 code) DAO – (i) Division Ammunition Officer DAQ – (p) Data acquisition – (i) Delivered Audio Quality DARE – (a) Drug Abuse Resistance Education DARO – (i/a) (U.S.) Defense Airborne Reconnaissance Office DARPA – (a) U.S. Defense Advanced Research Projects Agency DART – (a) Disaster Assistance Response Team – Dublin Area Rapid Transit DAS – (a) Defensive Aids Suite DASD – (i) (U.S.) Deputy Assistant Secretary of Defense DASL – (i) Datapoint's Advanced Systems Language DAU – (i) (U.S.) Defense Acquisition University DAWN – (a) (U.S.) Drug Abuse Warning Network DB dB – (s) Decibel Db – (s) Dubnium DB – (i) Database – Deutsche Bahn d/b/a – (i) doing business as DBA – (i) De Bellis Antiquitatis (miniature wargaming rules) DBBL – (i) (U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory DBCS – (i) Double Byte Character Set DBDO – (i) Desert BDO DBE – (i) Dame Commander of the Order of the British Empire DBF – (i) Detection By Fire (weapon launch signature) DBM – (i) De Bellis Multitudinis (miniature wargaming rules) – Detection By Movement (military target) DBR – (i) De Bellis Renationis (miniature wargaming rules) DBRA – (i) Davis-Bacon Related Acts DBS – (i) Direct Broadcast Services (television) Disclosure and Barring Service (UK) DC DC (i) da capo Italian Democrazia Cristiana Digital Compass Direct Current (s) District of Columbia (postal symbol) (i) Douglas Aircraft Company Dublin Core Duty Cycle Disconnected DCA (i) Defensive Counter Air Drum Corps Associates (p) DiChloroAcetate (s) Ronald Reagan Washington National Airport (IATA code) DCAA