List of Acronyms and Initialisms: R - RA

RA

• Ra – (s) Radium
• RA – (a) Radio Australia
• RA – (s) Rain (METAR Code) – (i) Rear Area – Reinforced Alert – Republican Army – Right Ascension – Royal Artillery (UK) – Royal Academy
• RAA – (a) Royal Automobile Association – South Australia – (i) Rear Assembly Area
• RAAF – (i) Royal Australian Air Force
• Rabobank – (p) Raiffeisen-Boerenleenbank (from the two banks that merged to form the modern company)
• RAC – (i) Royal Automobile Club (in the United Kingdom, renamed RAC plc in 2002)
• RACK – (a) Risk Aware Consensual Kink (SM phrase)
• Racon – (p) RAdar beaCON
• RADA – (a) Royal Academy of Dramatic Art
• Radar – (p) Radio Detection And Ranging
• RADB – (i) Real America Database – Resource Assessment Database – Reunion Address DataBase – Rice Allelopathy Data Base – Routing Arbiter Data Base
• RADb – (i) Routing Assets Data Base
• RadB – (s) Rad51/Dmc1 homologous protein
• RADC – (i) Region Air Defence Commander
• RAE – (i) UK Royal Aircraft Establishment (–1991)
• RAF – (i) Red Army Faction – Royal Air Force
• RAG – (a) Raising and Giving – Rocket Antitank Grenade
• RAGBRAI – (a) Register's Annual Great Bicycle Ride Across Iowa
• RAM – (a) Random Access Memory – Rolling Airframe Missile – Royal Air Maroc
• Ramark – (p) RAdar MARKer
• RAOC – (i) Rear Area Operation Centre
• RAP – (a/i) Radio Access Point – Radiological Assistance Program (U.S. Department of Energy) – Rear Area Protection – Recognised Air Picture – Recurring Advance Payment – Relational Associative Processor – Reliable Acoustic Path – Rocket-Assisted Projectile – Rule Against Perpetuities
• RARDE – (a) UK Royal Armament Research and Development Establishment (1962–1991)
• RARE – (a) Rapid Acquisition with Relaxation Enhancement (MRI technique)
• RASC – (a) Royal Army Service Corp – Former corps of British Army
• RATELO – (p) Radiotelephone Operator