Rd is an abbreviation for

road A road is a linear way for the conveyance of traffic that mostly has an improved surface for use by vehicles (motorized and non-motorized) and pedestrians. Unlike streets, the main function of roads is transportation. There are many types of ...

. RD or Rd may also refer to:

Arts and entertainment

* ''

Real Drive is an anime TV series created by Production I.G and Masamune Shirow (known for the ''Ghost in the Shell'' and '' Appleseed'' franchises) under the directorship of Kazuhiro Furuhashi, produced in collaboration with broadcaster Nippon Televisi ...

'', an anime by Production I.G * RD (group), a British girl group also known as Ruff Diamondz * ''

Rilindja Demokratike ''Rilindja Demokratike'' ( en, Democratic Rebirth and short RD) is an Albanian newspaper founded and continuously published in Tirana. Rilindja Demokratike is the official newspaper of the Democratic Party of Albania. Its chief editor is Bledi Ka ...

'', an Albanian newspaper

Businesses and organizations

* USDA Rural Development, an agency of the United States Department of Agriculture *

Ryan International Airlines Ryan International Airlines, Inc. was an American FAR 121 airline with domestic, flag, and supplemental authority. Synopsis and history Based at Chicago Rockford International Airport in Rockford, Illinois, the US Postal Service was once the a ...

(IATA airline designator RD)

Military decorations

Reserve Decoration The Decoration for Officers of the Royal Naval Reserve, commonly known as the Reserve Decoration (RD) was a medal awarded to officers with at least fifteen years service in the Royal Naval Reserve (RNR) of the United Kingdom. The medal was instit ...

, an award for service in the Royal Navy Reserve of the United Kingdom * Emblem for Reserve Force Service or Reserve Decoration, an award of the South African National Defense Force Military Reserve

Science, technology, and mathematics

Computing and mathematics

Rata Die Rata Die (R.D.) is a system for assigning numbers to calendar days (optionally with time of day), independent of any calendar, for the purposes of calendrical calculations. It was named (after the Latin ablative feminine singular for "from a fixed d ...

, a calendar-independent system to assign numbers to calendar dates * Remote Desktop, a graphical interface to connect one computer to another over a network *

Rider (software) JetBrains s.r.o. (formerly IntelliJ Software s.r.o.) is a Czech software development company which makes tools for software developers and project managers. , the company has offices in Prague; Munich; Berlin; Boston, Massachusetts; Amsterdam; ...

, a cross-platform IDE intended for C# and .NET development *

Route distinguisher A route distinguisher is an address qualifier used only within a single internet service provider's Multiprotocol Label Switching (MPLS) network. It is used to distinguish the distinct virtual private network (VPN) routes of separate customers who ...

, in data networking, a concept in Multiprotocol Label Switching * Ruby Document format, a markup language used for documentation of Ruby programs

Health and medicine

* Restrictive dermopathy * Reading disability, a condition resulting primarily from neurological factors * Registered

Dietitian A dietitian, medical dietitian, or dietician is an expert in identifying and treating disease-related malnutrition and in conducting medical nutrition therapy, for example designing an enteral tube feeding regimen or mitigating the effects of ca ...

, an expert in dietetics *

Retinal detachment Retinal detachment is a disorder of the eye in which the retina peels away from its underlying layer of support tissue. Initial detachment may be localized, but without rapid treatment the entire retina may detach, leading to vision loss and blin ...

, a disorder of the eye * Risk difference, a term in epidemiology related to

absolute risk reduction The risk difference (RD), excess risk, or attributable risk is the difference between the risk of an outcome in the exposed group and the unexposed group. It is computed as I_e - I_u, where I_eis the incidence in the exposed group, and I_u is the ...

Other uses in science and technology

Rate–distortion optimization Rate-distortion optimization (RDO) is a method of improving video quality in video compression. The name refers to the optimization of the amount of ''distortion'' (loss of video quality) against the amount of data required to encode the video, th ...

, a decision algorithm used in video compression * ''Reaktivniy Dvigatel'', a Soviet Russian prefix for an engine design series (literally, "reactive engine"; see RD-8 for example) *

Research and development Research and development (R&D or R+D), known in Europe as research and technological development (RTD), is the set of innovative activities undertaken by corporations or governments in developing new services or products, and improving existi ...

Pratt & Whitney Rocketdyne Pratt & Whitney Rocketdyne (PWR) was an American company that designed and produced rocket engines that use liquid rocket propellants, liquid propellants. It was a division of Pratt & Whitney, a fully owned subsidiary of United Technologies Corpo ...

, a United States rocket engine company * Rutherford (unit), a unit of radioactivity

Other uses

* R^d, the mathematical

domain Domain may refer to: Mathematics *Domain of a function, the set of input values for which the (total) function is defined **Domain of definition of a partial function **Natural domain of a partial function **Domain of holomorphy of a function * Do ...

of real numbers * ‹rd›, a Latin alphabet digraph of a retroflex stop in Aboriginal Australian languages * Repair Depot (e.g.,

6 Repair Depot No. 6 Repair Depot (6 RD) was an aircraft modification and repair unit of the Royal Canadian Air Force's Air Materiel Command located at CFB Trenton, Trenton, Ontario. Duties of No. 6 RD included handling aircraft at other stations around southern ...

), in military use *

Resident director {{redirect-distinguish, Head resident, Chief resident A Residence Hall Director is college or university employee generally responsible for the management and daily operations of campus residence halls. While the term Residence Hall Director is the ...

, a common staff position at universities and colleges with on-campus housing * Richmond and Danville Railroad *

rmdir In computing, rmdir (or rd) is a command (computing), command which will remove an empty directory (file systems), directory on various operating systems. Implementations The command is available in Unix (e.g. macOS, Solaris (operating system), ...

, a shell command meaning "remove directory" * Rural Dean, an ecclesiastical title in

Anglicanism Anglicanism is a Western Christian tradition that has developed from the practices, liturgy, and identity of the Church of England following the English Reformation, in the context of the Protestant Reformation in Europe. It is one of the ...

Rural delivery service Rural delivery service refers to services for the delivery of mail to rural areas. In many countries, rural mail delivery follows different rules and practices from that in urban areas. For example, in some areas rural delivery may require homeow ...

, mail delivery in what are traditionally considered rural areas in the United States *

Dominican peso ' ( en, Dominican peso) has been the name of the currency of the Dominican Republic ( es, República Dominicana) since 2011. Its Currency symbol, symbol is "Dollar sign, $", with "RD$" used when distinction from other pesos (or dollars) is requi ...

(currency symbol: RD$) * An English-language ordinal indicator, for ordinal numbers ending in "third" (e.g. 3rd, 23rd, 33rd) * A round or cartridge of ammunition *An abbreviation of Regional district {{disambiguation