DF or df may refer to:
Gaming
* ''
DeFRaG
''DeFRaG'' (also capitalised as ''defrag'', abbreviated as df, and its name comes from « Défis Fragdome ») is a free software modification for id Software's first-person shooter computer game ''Quake III Arena'' (''Q3A''). The mod is dedicate ...
'', a modification for the computer game ''Quake III Arena''
* ''
DragonFable
''DragonFable'' is a free-to-play, online, browser-based, single-player, fantasy, role-playing game developed by Artix Entertainment and updated on a weekly basis. Players may access locked game content by upgrading to a premium account f ...
'', a 2006 video game by Artix Entertainment
* ''
Dwarf Fortress
''Dwarf Fortress'' (officially called ''Slaves to Armok: God of Blood Chapter II: Dwarf Fortress'') is a construction and management simulation and roguelike indie video game created by Bay 12 Games. Available as freeware and in development sinc ...
'', a 2006 sandbox-style computer game
Places
*
Distrito Federal (Brazil)
The Federal District ( pt, Distrito Federal ) is one of 27 States of Brazil, federative units of Brazil. Located in the Central-West Region, Brazil, Center-West Region, it is the List of Brazilian states by area, smallest Brazilian federal unit ...
, or the Federal District
*
Distrito Federal (Mexico), or the Federal District, now known as Mexico City
Politics
*
Danish People's Party
The Danish People's Party ( da, Dansk Folkeparti, DPP/DF) is a nationalist and right-wing populist political party in Denmark. It was formed in 1995 by former members of the Progress Party (FrP).
The DPP lent its support to the Venstre– ...
(''Dansk Folkeparti'')
*
Democratic Front (Bosnia and Herzegovina)
The Democratic Front ( bs, Demokratska fronta, DF / Демократски фронт, ДФ) is a multi-ethnic social-democratic and social-liberal political party in Bosnia and Herzegovina. Its current leader and founder of DF is Željko Komši ...
(Demokratska fronta)
*
Democratic Front (Montenegro)
The Democratic Front ( sh, Демократски фронт / Demokratski front, DF) is a right-wing populist and social conservative political alliance in Montenegro. It is currently composed of the New Serb Democracy, Movement for Changes ...
(''Demokratski front'')
Science and technology
*
df (Unix)
(abbreviation for ''disk free'') is a standard Unix command used to display the amount of available disk space for file systems on which the invoking user has appropriate read access. is typically implemented using the statfs or statvfs syste ...
, a Unix command to report disk space usage by a filesystem
*
Dairy
A dairy is a business enterprise established for the harvesting or processing (or both) of animal milk – mostly from cows or buffaloes, but also from goats, sheep, horses, or camels – for human consumption. A dairy is typically located on ...
free, identifying products that contain no milk
*
Decapacitation factor, in biochemistry
*
Degrees of freedom
Degrees of freedom (often abbreviated df or DOF) refers to the number of independent variables or parameters of a thermodynamic system. In various scientific fields, the word "freedom" is used to describe the limits to which physical movement or ...
, various measures in statistics, mathematics and physics
*
Density function
In probability theory, a probability density function (PDF), or density of a continuous random variable, is a function whose value at any given sample (or point) in the sample space (the set of possible values taken by the random variable) can ...
, a mathematical function with a wide range of applications
*
Dielectric loss
Dielectric loss quantifies a dielectric material's inherent dissipation of electromagnetic energy (e.g. heat). It can be parameterized in terms of either the loss angle ''δ'' or the corresponding loss tangent tan ''δ''. Both refer to the ...
*
Direction finding
Direction finding (DF), or radio direction finding (RDF), isin accordance with International Telecommunication Union (ITU)defined as radio location that uses the reception of radio waves to determine the direction in which a radio stat ...
, a technique used to locate radio transmitters
*
Direction flag
The direction flag is a flag that controls the ''left-to-right'' or ''right-to-left'' direction of string processing, stored in the FLAGS register on all x86-compatible CPUs.Dissipation factor In physics, the dissipation factor (DF) is a measure of loss-rate of energy of a mode of oscillation (mechanical, electrical, or electromechanical) in a dissipative system. It is the reciprocal of quality factor, which represents the "quality" or ...
, a measure of loss-rate of energy of an oscillation mode in a dissipative system
*
Dongfeng (missile)
The ''Dongfeng'' () series, typically abbreviated as "DF missiles", are a family of short, medium, intermediate-range and intercontinental ballistic missiles operated by the Chinese People's Liberation Army Rocket Force (formerly the Second ...
, a Chinese intercontinental ballistic missile
* Dongfeng series of diesel locomotives
**
China Railways DF
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...
**
China Railways DF4
The DF4 (Chinese: 东风4) is a type of diesel-electric locomotive used in the People's Republic of China. It has been in production since 1969 and is still produced as of 2007 by several local companies. It is the most common locomotive in Chin ...
**
China Railways DF8
*
Methylphosphonyl difluoride
Methylphosphonyl difluoride (DF), also known as EA-1251 or difluoro, is a chemical weapon precursor. Its chemical formula is CH3POF2. It is a Schedule 1 substance under the Chemical Weapons Convention. It is used for production of sarin and som ...
, a chemical weapons precursor
*
Daylight factor
In architecture, a daylight factor (DF) is the ratio of the light level inside a structure to the light level outside the structure. It is defined as:
:''DF = (Ei / Eo) x 100%''
where,
''Ei'' = illuminance due to daylight at a point on the indoor ...
(DF), the ratio of the light level inside a structure to the light level outside the structure.
Other uses
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Defender (association football)
In the sport of association football, a defender is an Glossary of association football terms#O, outfield position whose primary role is to stop attacks during the game and prevent the opposition from scoring.
Centre-backs are usually positioned ...
*
Delta Force
The 1st Special Forces Operational Detachment–Delta (1st SFOD-D), referred to variously as Delta Force, Combat Applications Group (CAG), Army Compartmented Elements (ACE), "The Unit", or within Joint Special Operations Command (JSOC), Task Fo ...
, a component of the U.S. Army Joint Special Operations Command
*
Design Factory
Design Factory (DF) or Aalto Design Factory (ADF) is one of the three factories of Aalto University. The stated purpose of the Design Factory is to be a constantly developing environment for learning, teaching, research and industry co-operation r ...
, a department of Aalto University
*
Duty Free
A duty-free shop (or store) is a retail outlet whose goods are exempt from the payment of certain local or national taxes and duties, on the requirement that the goods sold will be sold to travelers who will take them out of the country, w ...
, goods which are free from tax or duty
*
New Zealand DF class locomotive (1979)
The New Zealand DF class locomotive of 1979 is a class of 30 Co-Co diesel-electric locomotives built by General Motors Diesel of Canada between 1979 and 1981. Between 1992 and 1997, all the locomotives were rebuilt as the DFT class, a turbo ...
*
Quantum Air
Quantum Air (formerly known as AeBal, Aerolíneas de Baleares) was an airline based in Madrid, Spain. It operated domestic scheduled services within Spain, as well as charter and ACMI operations all over Europe. Its fleet was originally wet-l ...
(formerly AeBal), Spanish airline (IATA code DF)
* Disfellowshipping (see
Jehovah's Witnesses and congregational discipline
Jehovah's Witnesses employ various levels of congregational discipline as formal controls administered by congregation elders. Members who engage in conduct that is considered inappropriate may be counseled privately by elders and congregational ...
)
See also
*
Dongfeng (disambiguation)
{{disambiguation, geo