RA
Appearance
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Look up RA in Wiktionary, the free dictionary.
RA may refer to:
Science
- Right ascension, an astronomical term
- Relation algebra, a type of mathematical structure
Medicine
- Relative analgesia machine, a type of sedative
- Right atrium, one of the four chambers of the heart
- Rheumatoid arthritis, an autoimmune disorder
- Retinoic acid, a metabolite of vitamin A
- Retrograde amnesia, a form of amnesia
Jobs and titles
- Registered Architect, a professional suffix typically used if not also a member of an architecture professional association
- Research assistant, a graduate student employed by a college or university for the purpose of academic research
- Research associate, a post-doctoral academic researcher
- Resident assistant or advisor, a student who supervises tenants of a residence hall
- Royal Academician, one of the 80 practicing artists elected as a member of the Royal Academy
Official organizations
- Registration authority, a body which maintains lists of international standards codes
- Regulatory Affairs, a department in charge of industry-government relations
- Rowing Australia, governing body for the sport of rowing in Australia
- Resettlement Administration, a New Deal government program in the United States
Military
- Regular Army, the permanent force of the US Army that is maintained during peacetime
- Royal Artillery, a regiment of the British Army
- Russian Army, also known as the Russian Ground Forces, formed in 1992
Designations
- A color rendering index used to measure colors in light
- Nepal Airlines, IATA code RA
- Several ISO 217 standard paper sizes
Places
- Republic of Armenia
- Rawlins County, Kansas, county, of which the largest city is Atwood
- Roosna-Alliku, village in Estonia
- Réseau Albert, a group of railways in France from 1889–1955
- Robert Academy, a former section of Robert College in Istanbul
- Roosevelt Academy, a college in the Netherlands
- Rolling Acres, a mall in Ohio
- Royal Academy, the Royal Academy of Arts in London
- RA Nightclub, a club located at the Luxor Hotel in Las Vegas
Computing
- RemoteAccess, a BBS software program
- Rocket Arena, a Quake mod
- Command & Conquer: Red Alert, a game
- Racing Aces, a 1993 video game for the Sega CD
- .ra, the file extension of a RealAudio file
- Route Advertisement, part of the Neighbor Discovery Protocol
Technology
- Resolution Advisory, an aircraft instruction from a Traffic Collision Avoidance System
- Radar altimeter
Entertainment
- Resident Advisor, an online magazine
- Rise Against, an American hardcore band
- Rusted Angel
- R.A. the Rugged Man, an emcee
Other
- Radhiallahu 'anhu, an Arabic phrase uttered after a righteous person's name
- Risk assessment, a step in a risk management procedure
- Risk analysis
- Remittance advice, a letter sent by a customer to a supplier, to inform the supplier that their invoice has been paid
- Republic Act, nomenclature used for Philippine laws from 1946 to 1972 and after 1987
- Ritual Abuse, sometimes known as Religious abuse, abuse administered under the guise of religion
- Random Arrest, a term used on Garry's Mod roleplay servers.