R - Abbreviations list
 r
radius | railway | rouble | rare | recto | right | river | road | rod | run(s) | rupee
 R
gas constant | rabbi | radical | radius | railway | rand | range | Réaumur scale | rector | Regina | Republican | resistance | response | restricted | Rex | right | river | road | roentgen | rook | rouble | royal | rupee
 Ra
radium
 RA
Rear Admiral | right ascension | Royal Academician | Royal Artillery
 RAA
Royal Academy of Arts
 RAAF
Royal Australian Air Force
 RAC
Royal Armoured Corps | Royal Automobile Club
 rad
radian
 rad.
radiator | radical | radio | radius | radix
 RADA
Royal Academy of Dramatic Art
 radar
 
 RADM
Rear Admiral
 RAEC
Royal Army Educational Corps
 RAF
Royal Air Force
 RAFDS
Royal Australian Flying Doctor Service
 RAFVR
Royal Air Force Volunteer Reserve
 RAID
redundant array of independent (or inexpensive) disks
 rall.
rallentando
 RAM
random-access memory | relative atomic mass | rocket-assisted motor | Royal Academy of Music
 RAMC
Royal Army Medical Corps
 RAMDAC
random-access memory digital-to-analogue converter
 RAN
request for authority to negotiate | Royal Australian Navy
 R & B
rhythm and blues
 R & D
research and development
 R & R
rest and recreation (or relaxation or recuperation)
 RAOC
Royal Army Ordnance Corps
 RAR
risk-adjusted return (on capital)
 RAS
Royal Agricultural Society | Royal Astronomical Society
 RATO
rocket-assisted takeoff
 RAVC
Royal Army Veterinary Corps
 Rb
rubidium
 RBA
Reserve Bank of Australia
 RBC
red blood cell
 RBE
relative biological effectiveness
 RBNZ
Reserve Bank of New Zealand
 RBTL
read between the lines
 rc
reinforced concrete
 RC
Red Cross | Reserve Corps | Roman Catholic
 RCA
Royal College of Art
 rcd
received
 RCGP
Royal College of General Practitioners
 RCM
Royal College of Music
 RCMP
Royal Canadian Mounted Police
 RCN
Royal Canadian Navy | Royal College of Nursing
 RCOG
Royal College of Obstetricians and Gynaecologists
 RCP
Royal College of Physicians
 RCPC
regional check processing center
 RCPsych
Royal College of Psychiatrists
 rcpt
receipt
 RCS
Royal College of Science | Royal College of Surgeons | Royal Corps of Signals
 rct
recruit
 RCT
randomized controlled trial | Royal Corps of Transport
 RCVS
Royal College of Veterinary Surgeons
 rd
rendered | road | rod | round
 Rd
Road
 RD
refer to drawer | Rural Delivery
 RDA
recommended daily allowance | Regional Development Agency
 RDBMS
relational database management system
 RDF
radio direction finder | refuse-derived fuel
 RDG
regional development grant
 RDO
rostered day off
 RDPR
refer to drawer please represent
 RDS
radio data system | respiratory distress syndrome
 RDZ
resource depletion zone
 re
Réunion
 ’re
are
 Re
Reynold’s number | rhenium | rupee
 RE
Reformed Episcopal | Religious Education | Right Excellent | Royal Engineers
 rec.
receipt | received | recipe | recommended | recorded | recorder | recording | recreation
 recd
received
 recip.
reciprocal | reciprocity
 recit.
recitative
 rec. sec.
recording secretary
 rect
receipt
 rect.
rectangle
 Rect.
Rector | Rectory
 red.
redeemable | reduced | reduction
 REE
rare-earth element
 ref.
reference | refining | reformed | refunding
 Ref. Ch.
Reformed Church
 refl.
reflection | reflective | reflex | reflexive
 reg.
region | registered | registrar | registry | regular | regularly | regulation | regulator
 Reg.
Regent | Regina | Regulo
 regd
registered
 Reg. Prof.
Regius Professor
 Regt
Regent | Regiment
 REIT
real-estate investment trust
 rel.
relating | relative | relatively | released | religion | religious
 relig.
religion
 rem
roentgen equivalent (in) man
 REM
rapid eye movement | remark
 REME
Royal Electrical and Mechanical Engineers
 rep.
repair | report | reported | reporter | reprint
 Rep.
Representative | Republic | Republican
 repr.
representative | represented | representing | reprint
 rept
receipt | report
 Repub.
Republic | Republican
 req.
request | require | required | requirement | requisition
 RES
renewable energy source | renewable energy system | reticuloendothelial system | Royal Entomological Society
 res.
research | reservation | reserved | reservoir | residence | resident | resigned | resolution
 resp.
respective | respectively | respiration | respondent
 ret.
retain | retired | return | returned
 retd
retained | retired | returned
 rev.
revenue | reverse | review | revised | revision | revolution | revolver | revolving
 Rev.
Reverend
 Revd
Reverend
 Rev. Ver.
Revised Version
 rf
reef
 Rf
rufiyaa | rutherfordium
 RF
radio frequency | reconnaissance fighter | regular forces | releasing factor | representative fraction | République Française | Reserve Force | retention factor | right fielder | Royal Fusiliers | Rwanda franc
 rf.
refund
 r.f.
radio frequency | rapid fire | reception fair | rough finish
 RFC
request for comment | Royal Flying Corps | Rugby Football Club
 RFD
radio-frequency device | reporting for duty
 RFLP
restriction fragment length polymorphism
 Rfn
Rifleman
 RG
right guard
 RGB
red, green, blue
 RGN
Registered General Nurse
 RGS
Royal Geographical Society
 Rgt
regiment
 rh
relative humidity | right hand
 rH
redox potential
 Rh
rhesus | rhesus factor | rhodium
 RH
relative humidity | right hand | Royal Highness
 RHA
Regional Health Authority | Royal Horse Artillery
 rhd
right-hand drive
 RHG
Royal Horse Guards
 rhp
rated horsepower
 RHS
Royal Horticultural Society
 RI
King and Emperor | Queen and Empress | religious instruction | Rhode Island | Royal Institution
 RIA
radioimmunoassay | Royal Irish Academy
 RIB
rigid inflatable boat
 RIBA
Royal Institute of British Architects
 RICS
Royal Institution of Chartered Surveyors
 RIE
recognized investment exchange
 RIF
reduction in force
 RIFF
resource interchange file format
 RIP
raster image processor | rest in peace | routing information protocol
 RISC
reduced-instruction-set computer
 rit.
ritardando | ritenuto
 riv.
river
 RJ
road junction
 RK
religious knowledge
 RL
real life | Rugby League
 RLG
rocket-launched grenade
 Rls
rials
 rly
railway
 rm
ream | room
 Rm
Romans
 RM
Registered Midwife | Royal Mail | Royal Marines
 RMA
Royal Marine Artillery | Royal Military Academy
 RMB
roadside mail box
 RMD
roadside mail delivery
 RMDIR
remove directory
 RMM
relative molecular mass
 RMN
Registered Mental Nurse
 rms
root mean square
 RMS
Royal Mail Service | Royal Mail Ship
 RMT
National Union of Rail, Maritime, and Transport Workers
 Rn
radon
 RN
Registered Nurse | right now | Royal Navy
 RNA
ribonucleic acid
 RNAS
Royal Naval Air Service | Royal Naval Air Station
 RNase
ribonuclease
 rnd
round
 RNIB
Royal National Institute for the Blind
 RNLI
Royal National Lifeboat Institution
 RNMH
Registered Nurse for the Mentally Handicapped
 RNP
ribonucleoprotein
 RNR
Royal Naval Reserve
 rns
runs
 RNVR
Royal Naval Volunteer Force
 RNZAF
Royal New Zealand Air Force
 RNZN
Royal New Zealand Navy
 ro
recto | Romania
 ro.
rood
 ROA
return on assets
 ROB
run of book
 ROC
Royal Observer Corps
 ROCE
return on capital employed
 ROE
return on equity
 ROI
region of interest | return on investment
 ROM
read-only memory
 rom.
roman (type)
 Rom.
Roman | Romance | Romania | Romanian | Romans
 RON
run of network
 RONA
return on net assets
 ROP
run of paper / press
 ro-ro
roll-on roll-off
 ROS
return on sales | run of site | run of station
 ROSCO
rolling stock operating company
 RoSPA
Royal Society for the Prevention of Accidents
 rot.
rotation
 ROTFL
rolling on the floor laughing
 ROTM
right on the money
 ROU
Republic of Uruguay
 ROW
run of week
 RP
Received Pronunciation | Regius Professor | Republic of the Philippines | role-play
 RPB
recognized professional body
 RPC
remote procedure call | Restrictive Practices Court
 RPG
report program generator | rocket-propelled grenade | role-playing game
 RPI
retail price index
 RPIX
a measure of the underlying rate of inflation, that is the retail price index not taking into account mortgage payments
 RPIY
a measure of the core rate of inflation, that is the retail price index not taking into account indirect taxes and council tax
 rpm
revolutions per minute
 RPM
resale (or retail) price maintenance
 RPN
reverse Polish notation
 RPO
Royal Philharmonic Orchestra
 rps
revolutions per second
 RPS
Royal Photographic Society
 rpt
repeat | report
 RPV
remotely piloted vehicle
 RQ
respiratory quotient
 RR
railroad | recovery room | relative risk | Right Reverend
 rRNA
ribosomal RNA
 RRP
recommended retail price
 Rs
rupees
 RS
recording secretary | right side | Royal Society
 RSA
regional selective assistance | Republic of South Africa | Returned Services Association | Royal Scottish Academician | Royal Scottish Academy | Royal Society of Arts | a public-key cryptography system used to provide high-level security
 RSC
Royal Shakespeare Company | Royal Society of Chemistry
 RSCN
Registered Sick Children’s Nurse
 RSFSR
Russian Soviet Federated Socialist Republic
 RSI
repetitive strain injury
 RSJ
rolled steel joist
 RSL
Returned Services League | Royal Society of Literature
 RSM
Regimental Sergeant Major | Republic of San Marino | Royal Society of Medicine
 RSNC
Royal Society for Nature Conservation
 RSP
retail service provider
 RSPB
Royal Society for the Protection of Birds
 RSPCA
Royal Society for the Prevention of Cruelty to Animals
 RSV
respiratory syncytial virus | Revised Standard Version
 RSVP
répondez s’il vous plaît
 rt
right
 RT
radio telegraph | radio telegraphy | radiotelephone | radiotelephony | real time | right tackle | temperature | round trip
 RTDS
real-time data system
 Rte
route
 RTE
Radio Telefis Éireann | real-time execution
 RTF
rich text format
 RTFM
read the fucking manual
 RTGS
real-time gross settlement
 Rt Hon.
Right Honourable
 RTM
read the manual
 RTN
Registered Theatre Nurse
 RTP
real-time transport protocol
 Rt Rev.
Right Reverend
 RTS
rate of technical substitution | request to send
 RTSC
read the source code
 RTW
ready-to-wear
 ru
Russia
 Ru
ruthenium
 RU
Republic of Burundi | are you | Rugby Union
 RUC
Royal Ulster Constabulary
 rv
random variable
 RV
re-entry vehicle | recreational vehicle | Revised Version
 rw
Rwanda
 RW
Right Worshipful | Right Worthy
 R/W
read/write
 RWD
rear-wheel drive
 rwy
railway
 RX
receive(r)
 RYS
read your screen


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Abbreviations