| Acronym | Sense | Language | Topics |
|---|---|---|---|
| QRIA | Quick-Reaction Integration Activity | In English | |
| QRIP | Quick Return on Investment Program | In English | → Finance |
| QRS | Qualification Review Sheet | In English | |
| QRS | Quartz Rate Sensor | In English | |
| QRS | Quick-Reaction Sortie | In English | |
| QRSL | Quick-Reaction Space Laboratory | In English | → Research institutes → Astronautics |
| QS | Quality System | In English | → Quality management |
| QSA | Qualification Site Approval | In English | |
| QSAE | Quality and Standards Authority of Ethiopia | In English | → Standardization |
| QSGVT | Quarter-Scale Ground Vibration Test | In English | |
| QSIM | Queuing Simulation | In English | |
| QSL | Qualified Source List | In English | |
| QSL | Quebec Sign Language | In English | → Canada |
| QSM | Quarter-Scale Model | In English | |
| QSRv | Quaternary Science Reviews | In English | → Serial publications, periodicals → Mathematics and natural sciences |
| QSS | Quindar Scanning System | In English | |
| QT | Qualification Test | In English | → Engineering, technology |
| QTP | Qualification Test Plan | In English | → Engineering, technology |
| QTP | Qualification Test Procedure | In English | → Engineering, technology |
| QTR | Qualification Test Report | In English | → Engineering, technology |
| QTV | Qualification Test Vehicle | In English | → Astronautics |
| QUADS | Quality Achievement Data System | In English | → Quality management |
| QUAS | Quaternisation of Starch Producers Association | In English | → Associations → Chemical technology |
| QUB | Queens University Belfast (www.qub.ac.uk) | In English | → Higher education, universities → United Kingdom |
| QUES | Queueing Model For Message Dissemination | In English | |
| QuFin | Quantitative Finance | In English | → Serial publications, periodicals → Mathematics → Finance |
| QUIC | Quality Data Information and Control | In English | → Quality management → Data |
| QUIC | Quality Information Control | In English | → Quality management |
| QUICKEST | Quadratic Upstream Interpolation for Convective Kinematics with Estimated Streaming Terms | In English | → Marine research, oceanography |
| QuOpt | Quantum Optics | In English | → Serial publications, periodicals → Optics → Quantum mechanics |
| QUP | Quality Unit Pack | In English | → Quality management |
| QuRes | Quaternary Research | In English | → Serial publications, periodicals |
| QuSOp | Quantum and Semiclassical Optics | In English | → Serial publications, periodicals → Optics → Quantum mechanics |
| QVT | Qualified Verification Testing | In English | → Engineering, technology |
| QVVT | Qualified Verification Vibration Testing | In English | |
| R | Arginine = R | Arginina | In Catalan = R | Arginin | In Czech = R | Arginin | In German = R | Arginina | In Spanish = R | Arginino | In Esperanto = R | Arginine | In French = R | 아르기닌 | In Korean = R | Arginin | In Croatian = R | Arginin | In Indonesian = R | Arginina | In Italian = R | ארגינין | In Hebrew = R | Arginīns | In Latvian = R | Arginin | In Letzeburgesh = R | Argininas | In Lithuanian = R | Arginine | In Dutch = R | アルギニン | In Japanese = R | آرګېنين | In Pashto = R | Arginina | In Polish = R | Arginina | In Portuguese = R | Аргинин | In Russian = R | Arginín | In Slovak = R | Arginiini | In Finnish = R | Arginin | In Swedish = R | Arginin | In Turkish = R | Аргінін | In Ukrainian = R | 精氨酸 | In Chinese |
In English | → Biochemistry, biophysics |
| R&CC | Recorder and Communication Control | In English | → Telecommunications |
| R&D | Research and Development = R&D | Recherche et développement | In French = F&E | Forschung und Entwicklung | In German = I+D | Investigación y Desarrollo | In Spanish = R&S | Ricerca e Sviluppo | In Italian = P&D | Pesquisa e Desenvolvimento | In Portuguese = O&O | Onderzoek en Ontwikkeling | In Dutch = FoU | Forsøk og Utvikling | In Norwegian |
In English | → Research policy → Engineering, technology |
| R&DO | Research and Development Operations | In English | → Research policy → Engineering, technology |
| R&E | Research and Engineering | In English | → Research policy → Engineering, technology |
| R&M | Reliability and Maintainability | In English | |
| R&P | Reserve and Process | In English | |
| R&PM | Research and Program Management | In English | → Research policy |
| R&QA | Reliability and Quality Assurance | In English | → Quality management |
| R&R | Remove and Replace | In English | |
| R&R | Rendezvous and Recovery | In English | |
| R&S | Reliability and Safety | In English | → Accidents, risks, safety |
| R&T | Research and Technology | In English | → Research policy → Engineering, technology |
| R&U | Repairs and Utilities | In English | → Maintenance and logistics |
| R&Z | Range And Zero | In English | |
| R2ML | REWERSE Rule Markup Language | In English | → Software → Computer hardware |
| R3S | Rapid Records Retrieval System | In English | → Records management → Knowledge management |
| RA | Recognition Arrangement | In English | |
| RA | Religious of Assumption | In English | → Roman catholic church |
| RA | Radar Altimeter | In English | |
| RA | Range Area | In English | |
| RA | Right Aft | In English | |
| RA | Right Ascension | In English | |
| RA | Regular Army | In English | → Military affairs |
| RA | Resettlement Administration | In English | → Central administration → Migrations |
| RAAB | Remote Amplifier and Adaptation Box | In English | |
| RAAB | Remote Application and Advisory Box | In English | |
| RAAM | Recursive Auto-Associative Memory | In English | → Artificial intelligence |
| RAAN | Right Ascension of Ascending Node | In English | |
| RABF | Radio Astronomy Bandstop Filter | In English | → Astronomy → Telecommunications |
| RAC | Reliability Action Center | In English | |
| RACC | Richmond Adult Community College (www.racc.ac.uk) | In English | → Education → United Kingdom |
| RACC | Reading Area Community College (www.racc.edu) | In English | → Education |
| RACC | Radio Advertising Clearance Centre | In English | → Telecommunications → 659 |
| RACCS | Remote Automatic Checkout and Calibration System | In English | |
| RACES | Radio Amateur Civil Emergency Service | In English | → Telecommunications |
| RACF | Resource Access Control Facility | In English | → Software |
| RACH | Random Access Channel | In English | → Telecommunications |
| RACS | Remote Automatic Calibration System | In English | |
| RACU | Remote Acquisition and Control Unit | In English | |
| RACV | Rotary Air Control Valve | In English | |
| RAD | Radiation Absorbed Dose | In English | |
| RAD | Research and Advanced Development | In English | → Research policy → Engineering, technology |
| RAD | Roentgen Absorbed Dosage | In English | |
| RAD | Rapid Application Development | In English | → Software |
| RADAR | (The) RAdiation Dose Assessment Resource | In English | |
| RADAR | RAdio Detection And Ranging | In English | → Telecommunications |
| RADC | Rome Air Development Center | In English | |
| RADCC | Radiation Control Center | In English | |
| RADIUS | Remote Authentication Dial In User Service | In English | → Networks, communication → Telecommunications |
| RADO | Radiation Dosimetry | In English | → Radioactivity → Astronautics → Astronomy |
| RADO-HTR | Radiation Dosimetry - High Temperature Ratio | In English | → Radioactivity → Astronautics → Astronomy |
| RADOP | Radiator Optimization Computer Code | In English | → Software |
| RADVS | Radar Altimeter And Doppler Velocity Sensor | In English | |
| RAE | Royal Aerospace Establishment | In English | → Aeronautics, aircraft → Astronautics |
| RAE | Radio Astronomy Explorer | In English | → Astronomy |
| RAE | Range, Azimuth, and Elevation | In English | → Astronomy |
| RaEE | Radio and Electronic Engineer | In English | → Serial publications, periodicals → Telecommunications → Electronics |
| RAF | Requirements Analysis Form | In English | |
| RAF | Royal Air Force (www.raf.mod.uk) | In English | → Military affairs |
| RAG | Recombination Activating Gene | In English | → Genetics → Biochemistry, biophysics |
| RAG | Reusable Agenda | In English | → Horology |
| RAI | Radar Altimeter Indicator | In English | → Aeronautics, aircraft → Astronautics |
| RAI | Review Action Item | In English | |
| RAI | Roll Attitude Indicator | In English | → Astronautics |
| RAID | Redundant Array of Independant Disks | In English | → Memories |
| RAID | Redundant Array of Independent Disks | In English | → Memories |
| RAID | Regional Association for Irrigation and Drainage = ARID | Association Régionale pour l'Irrigation et le Drainage | In French |
In English | → Associations → 627 → Agricultural sciences |
| RAID | Redundant Array of Inexpensive Disks | In English | → Computer hardware |
| RAII | Resource Acquisition Is Initialization | In English | → Software |
| RAISE | Rangelands Atmosphere-Hydrosphere-Biosphere Interaction Study Experiment in Northeastern Asia | In English | → Meteorology, climatology → Ecology → Hydrology → 5514 |
| RAJ | Russian Association of Japanologists | In English | → Associations → Language, linguistics, literature → Geography, biography, history → Russia |
| RAJPO | Range Application Joint Program Office | In English | |
| RAL | Research in African Literature | In English | → Serial publications, periodicals → 821 → Africa |
| RAL | Rutherford-Appleton Laboratory | In English | → Research institutes |
| RAL | Responsibility Assignment List | In English | |
| RAL | Reed Activated Lubrication | In English | |
| RALPH | Reduction and Acquisition Of Lunar Pulse Heights | In English | → Astronomy → Astronautics |
| RALT | Radar Altimeter | In English | → Aeronautics, aircraft → Astronautics |
| RAM | Random Access Memory | In English | → Memories |
| RAM | Radar Absorption Material | In English | |
| RAM | Reliability Assessment Model | In English | → Quality management |
| RAM | Requirements Allocation Matrix | In English | |
| RAM | Research and Applications Module | In English | |
| RAM | Resource Allocation Manager | In English | |
| RAM | Responsibility Assignment Matrix | In English | → Management |
| RAM | Root Apical Meristem | In English | → Botany |
| RAMAC | Random Access Method of Accounting And Control | In English | → Accounting |
| RAMCS | Remote Automatic Measuring and Calibration System | In English | |
| RAMDAC | Random Access Memory Digital to Analog Converter | In English | → Memories |
| RAMP | Replenishment Activity Management Plan | In English | → Management |
| RAMPS | Resource Analysis and Mission Planning System | In English | → Management |
| RAMS | Regional Atmospheric Modeling System (http://rams.atmos.colostate.edu) | In English | → Meteorology, climatology |
| RAN | Royal Australian Navy (www.navy.gov.au) | In English | → 359 → Australia |
| RANC | Radar Absorption Noise and Clutter | In English | |
| RANK | Receptor Activator of NF-KappaB | In English | → Biochemistry, biophysics |
| RANN | Research Applied to National Needs | In English | → Research policy → Engineering, technology |
| RAP | Regional Action Programme | In English | |
| RAP | Reliability Assurance Program | In English | → Quality management |
| RAP | Reserve Auxiliary Payload | In English | → Astronautics |
| RAP | Responsibility Accounting Program | In English | → Accounting |
| RAPCON | Radar Approach and Control | In English | → Aeronautics, aircraft → Astronautics |
| RAPD | Randomly Amplified Polymorphic DNA | In English | |
| RAPHAEL | ReActor for Process heat, Hydrogen And ELectricity generation | In English | → Energy economics |
| RAPID | Revolutionary Avalanche Photodiode Infrared Detector | In English | → Electronics → Tourism |
| RAPP | Resource and Planning Program | In English | → Management |
| RAPRIA | Russian Federation Association for Pattern Recognition and Image Analysis | In English | → Associations → Graphical processing → Image processing |
| RAPS | Regulatory Affairs Professionals Society (www.raps.org) | In English | → Organizations and associations → Law, jurisprudence |
| RAQ | Rarely Asked Questions | In English | |
| RAR | Resource Accommodation Report | In English | → Management |
| RaRLJ | Radio Research Laboratories Journal | In English | → Serial publications, periodicals → Telecommunications |
| RaRLR | Radio Research Laboratories Review | In English | → Serial publications, periodicals → Telecommunications |
| RARP | Reverse Address Resolution Protocol | In English | → Networks, communication |
| RAS | Royal Astronomical Society | In English | → Organizations and associations → Astronomy |
| RAS | Reacquisition Sensor | In English | |
| RAS | Remote Access Set | In English | |
| RAS | Requirements Accounting System | In English | → Accounting |
| RAS | Requirements Allocation Sheet | In English | |
| RAS | Reuse All Systems | In English | |
| RAS-HKB | Royal Asiatic Society - Hong Kong Branch | In English | |
| RAS-KB | Royal Asiatic Society - Korea Branch | In English | |
| RAS-SL | Royal Asiatic Society of Sri Lanka | In English | |
| RaSc | Radio Science | In English | → Serial publications, periodicals → Telecommunications |
| RaScB | Radio Science Bulletin | In English | → Serial publications, periodicals → Telecommunications |
| RaScS | Radio Science Supplement | In English | → Serial publications, periodicals → Telecommunications |
| RASM | Remote Analog Submultiplexer | In English | → Electrical engineering |
| RASMUS | Remote Accessible Software configurable Multi-channel Ultrasound Sampling system | In English | → Software → Diagnostics |
| RASRO | Rescue At Sea Resettlement Offer | In English | → Migrations |
| RASTI | Rapid Speech Transmission Index | In English | → Acoustical engineering |
| RATCC | Radar Air Traffic Control Center | In English | → Aeronautics, aircraft |
| RATO | Rocket-Assisted Takeoff | In English | → Astronautics |
| RATS | Regional Antiterrorism Structure | In English | → Social sciences |
| RAU | Remote Access Unit | In English | |
| RAU | Remote Acquisition Unit | In English | |
| RAUIS | Remote Acquisition Unit Interconnecting Station | In English | |
| RAVE | Rotax Adjustable Variable Exhaust | In English | |
| RAWA | Revolutionary Association of the Women of Afghanistan = راوا | جمعیت انقلابی زنان افغانستان | In Persian |
In English | → Associations → Feminism |
| RAWS | Role-Adaptable Weapons System | In English | → Military engineering |
| RAX | Remote Access Computing System | In English | → Computer hardware |
| RAX | Remote Access Terminal | In English | → Human-computer interaction |
| RAZEL | Range, Azimuth, and Elevation | In English | → Astronomy |
| RB | Radar Beacon | In English | |
| RB | Rubber Base | In English | |
| Rb | Rubidium = Rb | Rubidium | In French = Rb | Rubidium | In Afrikaans = Rb | روبيديوم | In Arabic = Rb | Рубідый | In Belarusian = Rb | Рубидий | In Bulgarian = Rb | রুবিডিয়াম | In Bengali = Rb | Rubidijum | In Bosnian = Rb | Rubidi | In Catalan = Rb | Rubidiu | In Corsican = Rb | Rubidium | In Czech = Rb | Rwbidiwm | In Welsh = Rb | Rubidium | In Danish = Rb | Rubidium | In German = Rb | Ρουβίδιο | In Greek = Rb | Rubidio | In Esperanto = Rb | Rubidio | In Spanish = Rb | Rubiidium | In Estonian = Rb | Rubidio | In Basque = Rb | روبیدیوم | In Persian = Rb | Rubidium | In Finnish = Rb | Rubidi | In Friulian = Rb | Rúbaidiam | In Irish = Rb | Rubidio | In Galician = Rb | Rubiddjum | In Manx = Rb | רובידיום | In Hebrew = Rb | रुबिडियम | In Hindi = Rb | Rubidij | In Croatian = Rb | Rubídium | In Hungarian = Rb | Ռուբիդիում | In Armenian = Rb | Rubidium | In Indonesian = Rb | Rubidio | In Ido = Rb | Rúbidín | In Icelandic = Rb | Rubidio | In Italian = Rb | ルビジウム | In Japanese = Rb | xunsodna | In Lojban = Rb | Rubidium | JV = Rb | ರುಬಿಡಿಯಮ್ | In Kannada = Rb | 루비듐 | In Korean = Rb | Rûbîdyûm | In Kurdish = Rb | Rubidium | In Latin = Rb | Rubidium | In Letzeburgesh = Rb | Rubidis | In Lithuanian = Rb | Rubīdijs | In Latvian = Rb | റൂബിഡിയം | In Malayalam = Rb | Rubidium | In Dutch = Rb | Rubidium | In Nynorsk = Rb | Rubidium | In Norwegian = Rb | Rubidi | In Occitan = Rb | Rubid | In Polish = Rb | Rubídio | In Portuguese = Rb | Rubidyu | In Quechua = Rb | Rubidiu | In Romanian = Rb | Рубидий | In Russian = Rb | Rubidiu | In Sicilian = Rb | Rubidijum | In Serbo-Croatian = Rb | Rubídium | In Slovak = Rb | Rubidij | In Slovenian = Rb | Рубидијум | In Serbian = Rb | Rubidium | In Swedish = Rb | Rubidi | In Swahili = Rb | ருபீடியம் | In Tamil = Rb | รูบิเดียม | In Thai = Rb | Rubidyum | In Turkish = Rb | Рубідій | In Ukrainian = Rb | Rubidiy | In Uzbek = Rb | Rubidi | In Vietnamese = Rb | Rubidiom | In Walloon = Rb | 铷 | In Chinese |
In English | → Chemistry |
| RBA | Radar Beacon Antenna | In English | |
| RBA | Recovery Beacon Antenna | In English | |
| RBC | Red Blood Cells | In English | → Blood and circulatory system |
| RBC | Rotating Beam Ceilometer | In English | |
| RBDE | Radar Bright Display Equipment | In English | |
| RBE | Radiation Biological Effectiveness | In English | → Biological sciences |
| RBE | Relative Biological Effectiveness | In English | → Pharmacology, toxicology → Nuclear technology |
| RBF | Regional Blood Flow | In English | → Blood and circulatory system |
| RBMT | Retrospective Bibliographies on Magnetic Tape | In English | → Libraries |
| RBN | Radio Beacon | In English | |
| RBS | Radar Bomb Scoring | In English | → Military engineering |
| RC | Radio Command | In English | |
| RC | Reverse Current | In English | |
| RC | Rotation(al) Control | In English | |
| RC | Radio Control | In English | |
| RC | Range Command | In English | |
| RC | Rate Command | In English | |
| RC | Reaction Control | In English | |
| RC | Recovery Controller | In English | |
| RC | Recurring Cost | In English | → Prices |
| RC | Reinforced Concrete | In English | → Construction |