R2
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(Redirected from R-2)
R2, R02, R.II, R.2 or R-2 may refer to:
- R2, a symbol for the coefficient of determination of a linear regression
- R2, the two-dimensional vector space of real numbers in mathematics
- .r02, a RAR file extension
- R-2 (missile), an improved version of German V-2 rocket manufactured by the Soviet Union
- R2: Reign of Revolution, an online game
- R2: Risk of explosion by shock, friction, fire or other sources of ignition, a risk phrase in chemistry
- R2 RNA element, a cis-acting element identified in R2 retrotransposons which is involved in priming the reverse transcription process
- R2 (SEPTA), a regional rail line in Philadelphia, Pennsylvania
- R2 signalling, a family of telephony protocols for line and register signalling
- R2-D2, a character from Star Wars films and books
- R2 unit, any astromech droid in the Star Wars fictional universe
- ATC code R02, a section of the Anatomical Therapeutic Chemical Classification System
- Autopista Radial R-2, a Spanish radial motorway connecting Madrid to Guadalajara and passing through Alcobendas and connecting to N-320
- Code Geass: Lelouch of the Rebellion R2, a 2008 anime series
- DFW R.II, a 1918 German bomber aircraft
- Fiat R.2, a 1919 Italian reconnaissance aircraft
- Haplogroup R2 (Y-DNA), a human Y-chromosome haplogroup
- HMS Zest (R02), a World War II British Royal Navy Z-class destroyer
- Jaguar R2, Jaguar Racing's car for the 2001 Formula One season
- Linke-Hofmann R.II, a WWI German bomber aircraft
- Motorroad R2 (Slovakia)
- Polikarpov R-2, a Soviet Union copy of the 1931 British Airco DH.9A light bomber aircraft
- Subaru R2, a 2003 Japanese car
- USS R-2 (SS-79), a 1918 R-class coastal and harbor defense submarine of the United States Navy
- Windows Server 2003 R2
- Windows Server 2008 R2
and also :
- BBC Radio 2, a British radio station
- DVD region code 2
- Gangrene ICD-10 code
- Orenburg Airlines by IATA code
- Patricio Rey y sus Redonditos de Ricota or R2, an Argentine rock band
- an abbreviation for :
- Resistance 2, a video game
- receptor 2, the second in line of a series of cellular receptors, generally at the end of an acronym
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