DL

DL, dL, or dl may stand for:

In science and technology

In electronics and computing

• <dl></dl>, an HTML element used for a definition list
• Deep learning, a branch of algorithm-based machine learning
• Description logics, a family of knowledge representation languages
• Delete Line (ANSI), an ANSI X3.64 escape sequence
• Digital library, a library in which collections are stored in digital formats
• Diode logic, a logic family using diodes
• DVD-R DL, a DVD Dual Layer engineering method
• DL register, the low byte of an X86 16-bit DX register
• Dynamic loading, a mechanism for a computer program to load a library

In telecommunications

• Data link, a computer connection for transmitting data
• Distribution list, a function of e-mail clients
• Downlink, the link from a satellite to a ground station
• Download, a transfer of electronic data

Vehicles

• Subaru DL, an automobile
• Australian National DL class, a class of diesel locomotives built by Clyde Engineering
• New Zealand DL class locomotive, a diesel-electric class built by Dalian Locomotive and Rolling Stock Company
• Destroyer leader, a large naval vessel capable of leading a flotilla

Other uses in science and technology

• Dimensionless quantity (dl, in lower case), the 'per unit' system of measurement
• Decilitre (or deciliter, dL), a unit of measurement of capacity or volume
• Discrete logarithms, in mathematics
• Distance learning, Internet-based education
• HPE ProLiant DL, density line servers
• Dextrorotation and levorotation or D/L nomenclature, used in naming chemical compounds

In arts and entertainment

• D.L. (play), a Bulgarian play
• DL series, a series of adventures and some supplementary material for the Advanced Dungeons & Dragons role playing game
• D. L. Hawkins, fictional character on the American television series Heroes
• D. L. Hughley (born 1963), American actor and comedian
• Directors Lounge, an ongoing Berlin-based film and media-art platform and/or its annual film festival
• Dominant leittonwechselklänge

In business

• Dai-ichi Life, an insurance company
• Delta Air Lines (IATA airline code: DL)

Railroads

• Delaware–Lackawanna Railroad in Pennsylvania, U.S.
• District line, a London Underground line

Places

• DL postcode area, Darlington, north-east England
• County Donegal, Ireland
• Delanggu railway station, a railway station in Indonesia (station code)
• Detroit Lakes, Minnesota, US

In politics

• Democracy is Freedom – The Daisy, a former political party in Italy
• Drinking Liberally, a social organization that discusses politics in bars
• Liberal Democracy (France) (Démocratie Libérale), a former political party in France
• Rights and Freedom, a political party in Italy

In sports

• Defensive lineman, an American/Canadian football players position
• Disabled list, the former name of the injured list, a list of injured baseball players
• Duckworth–Lewis method, a mathematical way to calculate the target score in cricket
• Deadlift, a powerlifting move
• Detroit Lions, a football team in the NFL

Other uses

• Deputy Lieutenant, a British title
• Diaper lover, a fetish
• Dimension Lengthwise, an International standard size of an envelope (110mm × 220mm, holds ⅓ A4)
• Doctor of Letters, a university degree
• Down-low (disambiguation)
• Driver's license, an official document which states that a person may operate a motorized vehicle
• Number 550, in Roman numerals