What does R/A stand for?

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Rank	Abbr.	Meaning
******	RA	Resident Assistant
******	RA	Resident Advisor
******	RA	Registration Authority
******	RA	Republic Act (Philippines)
******	RA	Royal Academy
******	RA	Return Authorization
******	RA	Risk Assessment
******	RA	Right Ascension (astronomy)
******	RA	Risk Analysis
******	RA	Red Alert
******	RA	Rise Against (band)
******	RA	Rheumatoid Arthritis
******	RA	Remote Access
******	RA	Rain (aviation meteorology)
******	RA	Regional Association
******	RA	Rapport
******	RA	Ravenna (Emilia Romagna, Italy)
******	RA	Radium
******	RA	Return Address (register)
******	RA	Rechtsanwalt (German: attorney)
******	RA	Room Air
******	RA	Random Access
******	RA	Royal Artillery
******	RA	Residents' Association
******	RA	Reserve Affairs
******	RA	Ram-Air (General Motors)
******	RA	Right Atrium (heart chamber)
******	RA	Radon
******	RA	Research Announcement
******	RA	Removal Action
******	RA	Remote Agent
******	RA	Red Army (counterstrike gaming clan)
******	RA	Red Army (WWII Soviet army)
*****	RA	Return Air (HVAC)
*****	RA	Ray Allen (basketball player)
*****	RA	Rural Area (terrain type)
*****	RA	Resource Allocation
*****	RA	Radio Australia
*****	RA	República Argentina
*****	RA	Royal Ambassadors
*****	RA	Router Advertisement (Message)
*****	RA	Regular Army
*****	RA	Rainforest Alliance
*****	RA	Rental Agreement
*****	RA	Rankine
*****	RA	Ready Access
*****	RA	Royal Arch (Masons)
*****	RA	Rear Admiral
*****	RA	Radial Artery
*****	RA	Roman Army
*****	RA	Radio Access
*****	RA	Rapid Access
*****	RA	Refractory Anemia (blood disorder)
*****	RA	Remote Assistance
*****	RA	Regional Anesthesia
*****	RA	Restricted Areas
*****	RA	Reasonable Alternative
*****	RA	Roald Amundsen (1st explorer to reach the South Pole)
*****	RA	Royal Nepal Airlines (IATA airline code)
*****	RA	Rebel Alliance (Star Wars)
*****	RA	Irish Republican Army
*****	RA	Rehabilitation Act of 1973
*****	RA	Random Allocation
*****	R/A	Return Air (air conditioning)
*****	RA	Ramblers Association (UK)
*****	RA	Réalité Augmentée (French: Augmented Reality)
*****	RA	Radiocommunications Agency (within DTI)
****	R/A	Registered Agent
****	RA	Radar Altimeter
****	RA	Resolution Advisory (air traffic warning)
****	RA	Rabbinical Assembly
****	RA	Resident Agent
****	RA	Rocket Arena (gaming site)
****	RA	Radiological Assessment
****	RA	Regulatory Analysis (environment)
****	Ra	Rate of Appearance
****	RA	Responsible Authorities
****	RA	Roughness Average (Surface texture of materials)
****	RA	Revenue Account (UK)
****	RA	Radio Altimeter
****	RA	Rate-Adaptive
****	RA	Readiness Assessment (various organizations)
****	RA	RealAudio File (proprietary streaming audio compression format, Real Networks)
****	RA	Rate Adaptation
****	RA	Rationalist Association (UK)
****	RA	Registration Agent (SIF)
****	RA	Realm Ability (Dark Age of Camelot on-line game)
****	RA	Red Armor (gaming)
****	RA	Relational Aggression (psychology)
****	RA	Rear Area
****	RA	Radio Authority (UK)
****	R/A	Radius of Action
****	RA	revenue analysis
****	RA	Regia Aeronautica (Italian Royal Air Force)
****	RA	Radiographic Absorptiometry (bone density calculation using a hand X-ray and a small metal wedge)
****	RA	Recovery Assistance (Program; Ohio)
****	RA	Routing Arbiter
****	RA	Relay Access
****	RA	Radiocommunication Assembly
****	RA	Règlement d'Application (French: Rules Compliance; various organizations)
****	RA	Reduction in Area
****	RA	Rate Area (NANPA)
****	RA	Resource Advisor
****	RA	Rubberized Asphalt
****	RA	Roaming Agreement
****	RA	Resource Analyst
****	RA	Regular Appointment
****	RA	Registered Aromatherapist (professional certification)
****	RA	Remote Adapter
***	RA	Remembrance Agent (computer program)
***	RA	Radiallahu Anhu (companions of Prophet Mohammed)
***	RA	Requested Article (Wikimedia Foundation)
***	RA	Red Armour (Quake)
***	RA	Recoveries Anonymous (Twelve Step Fellowship)
***	RA	Rescue Aid (emergency communications)
***	RA	Resident Auditor
***	RA	Ration Allowance
***	RA	Ready Alert
***	RA	Regional Associate
***	RA	Requesting Activity (CEFMS)
***	RA	Reattack
***	RA	Reduction Area
***	RA	Recorded Achievement ( Australian academics)
***	RA	Restricted Article
***	RA	Resident Administrator
***	RA	Regulatory Alternative
***	RA	Radiocommunication Act
***	RA	Robot Aircraft
***	RA	Runs Allowed per 9 Innings (baseball; like ERA, but with unearned runs also)
***	RA	Run Aggressive (Front Page Sports Football '95 et al)
***	RA	Reimbursement Authorization
***	RA	Retribution Aura (gaming, World of Warcraft)
**	RA	Ripple Adder
**	RA	Postal Tax Stamp (Scott Catalogue prefix; philately)
**	R/A	Receive/Acknowledge
**	RA	Red Armageddon (gaming clan)
**	RA	Repeat and Accumulate (type codes)
**	RA	Ready Analog
**	RA	Restricted Artistic (movie rating)
**	RA	Responsable d'Activités (French: Head of Activities)
**	RA	Reinforced Alert
**	RA	Règle Administrative (French: Administrative Rule; various organizations)
**	R/A	Réduction/Agrandissement (French photocopying)
**	RA	Roundhead Association (historical reenactment group)
**	RA	Router Arbiter
**	RA	reduced ameloblasts
**	RA	Record Auditing
**	RA	Raufoss Ammunition (Norwegian ammunition headstamp)
**	RA	Radiology Assembly of Medical Group Management Association
**	RA	Research Assistant/ship
**	RA	Resident Archive
**	RA	Recruit Alliance
**	RA	Rupture Adhésive (French: Adhesive Break; construction)
**	RA	Earned Run Average Plus (arcane baseball statistic; used to measure pitching dominance versus the league)
**	RA	Registraramerica (domain name registrar)
**	RA	Review/Requiring Activity
*	RA	Route Analysis CSCI
*	RA	Resynchronize Acknowledgement (ITU-T)
*	RA	Résiliable Annuellement (French: Annually Terminable; insurance)
*	RA	Routing Area Identifier Within Routing Domain (TMN)
*	RA	Religious of the Assumption (France) (religious order)
*	RA	Remedial Action
*	RA	Reliability Analysis
*	RA	Regulatory Authority
*	RA	Remington Arms (ammunition headstamp)
*	RA	Remittance Advice
*	RA	Repair Authorization
*	RA	Registered Architect
*	RA	Regional Administrator
*	RA	Regulatory Affairs
*	RA	Research Associate
*	RA	Research Article
*	RA	Representative Assembly (various organizations)
*	RA	Republic of Armenia
*	RA	Requirements Analysis
*	RA	Requiring Activity (US DoD)
*	RA	Range Area
*	RA	Recursion Available (computing)
*	RA	Red Alert (computer game)
*	RA	Reconnaissance Aircraft
*	RA	Record Attempt
*	RA	Realtor Associate
*	RA	Right Aft
*	RA	Revenue Authority (various locations)
*	RA	Robust Nucleus of the Archistriatum
*	RA	Ruthless Aggression
Note: We have 122 other definitions for R/A in our Acronym Attic

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