rr

Sound in the Kurdish language

RR, Rr or rr may refer to: ==Arts and media== RR (film), a 2007 experimental film by James Benning Red Ribbon Army, a fictional army in the Dragon Ball series Reference Reviews, a journal on reference works Ruff Ryders Entertainment, a record label and East Coast rap collective Fury from the Deep (production code: RR), a 1968 Doctor Who serial RR (EP), a 2023 collaborative EP by Rosalía and Rauw Alejandro RR, prefix for models of Jackson Rhoads electric guitars commissioned by guitarist Randy Rhoads ==Businesses and organizations== Rajasthan Royals, an Indian Premier League franchise Ranchi Rhinos, a defunct Hockey India League franchise Rashtriya Rifles, an Indian counter-insurgency force Rational Recovery, an addiction recovery program Rekords Rekords, an American record label Rhodesia Regiment, a Rhodesian Army unit Richard Rohac, an Austrian art metal firm Rolls-Royce Holdings (LSE code and logo) Rolls-Royce, several companies Royal Air Force (IATA airline designator RR) Ruff Ryders Entertainment, a record label and East Coast rap collective ==Language== rr (digraph) Revised Romanization of Korean, the official Korean language romanization system in South Korea ==Science and technology== ===Biology and medicine=== RR, an Rh factor phenotype "RR", a blood pressure measurement taken with a sphygmomanometer invented by Scipione Riva-Rocci RR interval (R wave to R wave interval), the inverse of heart rate Risk ratio, or relative risk, in statistics and epidemiology Respiratory rate, a vital sign Roundup Ready, a Monsanto line of genetically modified crop seeds ===Computing=== Resource record, in the Domain Name System Round-robin scheduling, an algorithm for coordinating processes in an operating system Route reflector, a Border Gateway Protocol configuration rr (debugging), a record and replay debugger for userspace Linux programs Resurrection Remix OS, a custom Android ROM created by Altan KRK and Varun Date ===Other uses in science and technology=== ITU Radio Regulations Rapid Refresh (weather prediction), a short-range numerical weather prediction model Rear-engine, rear-wheel-drive layout, in automotive design Recoilless rifle ==Sports== Rajasthan Royals, an Indian Premier League franchise Ranchi Rhinos, a defunct Hockey India League franchise Richmond Raceway, a motorsports racetrack in Richmond, Virginia Run rate, an average number of runs a batsman (or the batting side) scores in an over of 6 balls in cricket ==Transportation== ===Transport operators and services=== RR, a predecessor of the R (New York City Subway service) Raritan River Railroad (reporting mark: RR) Buzz (Polish airline) (IATA code: RR), a Polish airline subsidiary of Ryanair Holdings Rhodesia Railways, former Zimbabwean railway company Rhymney Railway, former British railway company Royal Air Force (IATA airline designator RR) ===Other uses in transportation=== Regional Road, a class of road in Ontario Rolls-Royce Holdings (LSE code and logo) Rolls-Royce, several companies ==See also== Roraima (ISO 3166 code: BR-RR), a state in Brazil Railroad Retirement Board (RRB), retirement benefits railroad workers R&R (disambiguation) R (disambiguation) RRR (disambiguation) RRRR (disambiguation)

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