RD
Rd is an abbreviation for road.
RD or Rd may also refer to:
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
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 Latin alphabet digraph of a retroflex stop in Aboriginal Australian languages
- rd, an 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
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
- Rd, the mathematical 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
Other uses
- Dominican peso (currency symbol: RD$)
- rd, a round or cartridge of ammunition
- Recurring deposit
- Regional district
- Rural delivery service, mail delivery in what are traditionally considered rural areas in the United States
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