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{{for|questions for the Wikipedia Reference Desk|Wikipedia:Reference desk}} '''Rd''' is an abbreviation for [[road]]. '''RD''' or '''Rd''' may also refer to: {{TOC right}} ==Arts, entertainment, and media== * ''[[Reader's Digest]]'', a United States general-interest magazine * ''[[Real Drive]]'', an anime by Production I.G * [[RD (group)]], a British girl group also known as Ruff Diamondz * ''[[Rilindja Demokratike]]'', an Albanian newspaper * Razor Dolls, an online blogging group based on [[SpaceHey]] and [[Instagram]] ==Businesses and organizations== * [[Pratt & Whitney Rocketdyne]], a United States rocket engine company * [[Ryan International Airlines]] (IATA airline designator RD) * [[USDA Rural Development]], an agency of the United States Department of Agriculture == Language == * ‹rd›, a [[List of Latin-script digraphs#R|Latin alphabet digraph]] of a retroflex stop in Aboriginal Australian languages * rd, an [[Ordinal indicator#English|English-language ordinal indicator]], for ordinal numbers ending in "third" (e.g. 3rd, 23rd, 33rd) ==Military== * [[Emblem for Reserve Force Service]] or Reserve Decoration, an award of the South African National Defense Force Military Reserve * Repair Depot (e.g., [[6 Repair Depot]]), in military use * [[Reserve Decoration]], an award for service in the Royal Navy Reserve of the United Kingdom == Positions and titles == * [[Resident director]], a common staff position at universities and colleges with on-campus housing * [[Rural dean]], an ecclesiastical title in Anglicanism * ''Reverendo Don'', the Italian written form of address for [[Priesthood in the Catholic Church|Catholic priests]], equivalent to the English “Reverend Father” ==Science, technology, and mathematics== === Computing === * [[Rata Die]], a calendar-independent system to assign numbers to calendar dates * [[Rate–distortion optimization]], a decision algorithm used in video compression * [[Rider (software)]], a cross-platform IDE intended for C# and .NET development * [[rmdir]], a shell command meaning "remove directory" * [[Route distinguisher]], 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]], an expert in dietetics * [[Retinal detachment]], a disorder of the eye * Risk difference, a term in epidemiology related to [[absolute risk reduction]] === Other uses in science, technology, and mathematics === * R<sup>d</sup>, the mathematical [[Domain of a function|domain]] of real numbers * ''Reaktivniy Dvigatel'', a Soviet Russian prefix for an engine design series (literally, "reactive engine"; see [[RD-8]] for example) * [[Research and development]] * [[Rutherford (unit)]], a unit of radioactivity == Transportation == * [[Red Line (Washington Metro)]] * [[Richmond and Danville Railroad]] ==Other uses== * [[Dominican peso]] (currency symbol: RD$) * rd, a round or [[cartridge (firearms)|cartridge]] of ammunition * [[Recurring deposit]] * [[Regional district]] * [[Rural delivery service]], mail delivery in what are traditionally considered rural areas in the United States == See also == * [[Remote desktop (disambiguation)]] {{disambiguation}}
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