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 Televi ...

'', an anime by Production I.G *

RD (group) RD, also known as Ruff Diamondz, were a British girl group from London comprising Julie "Chronz" Norton, Martika Lecointe-Akore, and Troy Hudson. The group were formed in 2009 when a manager introduced the members to each other via Myspace. The ...

, 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 ...

'', 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 th ...

(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 The Medalje vir Troue Diens - Medal for Loyal Service was instituted by the President of the Republic of South Africa on 16 April 2003 and came into effect on 27 April 2003. It can be awarded to all ranks whose character and conduct have been i ...

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 ...

, a calendar-independent system to assign numbers to calendar dates *

Remote Desktop In computing, the term remote desktop refers to a software- or operating system feature that allows a personal computer's desktop environment to be run remotely off of one system (usually a PC, but the concept applies equally to a server or a ...

, 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 RD (Ruby Document) is a lightweight markup language for writing Ruby-related documents. It can be embedded in Ruby source code. RD is a traditional format. In modern Ruby, developers tend to write documents in RDoc instead of RD. Use Origina ...

, a markup language used for documentation of Ruby programs

Health and medicine

Restrictive dermopathy Restrictive dermopathy (RD) is a rare, lethal autosomal recessive skin condition characterized by syndromic facies, tight skin, sparse or absent eyelashes, and secondary joint changes.James, William; Berger, Timothy; Elston, Dirk (2005). ''Andrews ...

Reading disability A reading disability is a condition in which a person displays difficulty reading. Examples of reading disabilities include: developmental dyslexia, alexia (acquired dyslexia), and hyperlexia (word-reading ability well above normal for age and ...

, 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 ...

, an expert in dietetics * Retinal detachment, 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 The RD-8 (Russian: and GRAU Index: 11D513) is a Soviet / Ukrainian liquid propellant rocket engine burning LOX and RG-1 (a rocket grade kerosene) in an oxidizer rich staged combustion cycle. It has a four combustion chambers that provide ...

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 propellants. It was a division of Pratt & Whitney, a fully owned subsidiary of United Technologies Corporation. It was headquarter ...

, a United States rocket engine company *

Rutherford (unit) The rutherford (symbol Rd) is a non-SI unit of radioactive decay. It is defined as the activity of a quantity of radioactive material in which one million nuclei decay per second. It is therefore equivalent to one megabecquerel, and one becquer ...

, 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 Trenton, Ontario. Duties of No. 6 RD included handling aircraft at other stations around southern Ontario and ...

), 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 The Richmond and Danville Railroad (R&D) Company was a railroad that operated independently from 1847 until 1894, first in the U.S. state of Virginia, and later on of track in nine states. Chartered on March 9, 1847, the railroad completed its ...

rmdir In computing, rmdir (or rd) is a command which will remove an empty directory on various operating systems. Implementations The command is available in Unix (e.g. macOS, Solaris, AIX, HP-UX), Unix-like (e.g. FreeBSD, Linux), DOS, Digital Resear ...

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

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 symbol is " $", with "RD$" used when distinction from other pesos (or dollars) is required; its ISO 4217 code is "DO ...

(currency symbol: RD$) * An English-language ordinal indicator, for ordinal numbers ending in "third" (e.g. 3rd, 23rd, 33rd) * A round or

cartridge Cartridge may refer to: Objects * Cartridge (firearms), a type of modern ammunition * ROM cartridge, a removable component in an electronic device * Cartridge (respirator), a type of filter used in respirators Other uses * Cartridge (surname), a ...

of ammunition *An abbreviation of

Regional district In the province of British Columbia in Canada, a regional district is an administrative subdivision of the province that consists of a geographic region with specific boundaries and governmental authority. there were 28 regional districts in ...

{{disambiguation