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Ras

Ras or RAS may refer to:

Arts and media

  • RAS Records Real Authentic Sound, a reggae record label
  • Rundfunk Anstalt Südtirol, a south Tyrolese public broadcasting service
  • Rás 1, an Icelandic radio station
  • Rás 2, an Icelandic radio station
  • Raise A Suilen, a Japanese band

Organizations

  • Railway Air Services, a UK airline
  • Rajasthan Administrative Service, India
  • Remote Astronomical Society Observatory of New Mexico
  • Richard Allen Schools, a charter school system in Ohio, USA
  • Richardson Adventist School, now North Dallas Adventist Academy
  • IEEE Robotics and Automation Society
  • Royal American Shows, an American travelling carnival company operating from the 1920s to the 1990s
  • Royal Asiatic Society of Great Britain and Ireland
  • Royal Astronomical Society, UK, founded 1820
  • Russian Academy of Sciences

Biology

  • RAAS, the renin–angiotensin system, a hormone system that regulates blood pressure
  • Recurrent aphthous stomatitis or canker sores
  • Renal artery stenosis, the narrowing of the renal arteries
  • Respiratory airway secretory cell, cells in humans and some other mammals that maintain airway health
  • Reticular activating system in the brain, regulating wakefulness
  • Retinoic acid syndrome, a complication of acute promyelocytic leukemia
  • Ras superfamily, a superfamily of signalling proteins
    • Ras subfamily, a family of signalling proteins

Science and technology

  • .ras, a SunOS raster format
  • RAS algorithm, an algorithm for iterative proportional fitting in economics
  • RAS supergroup or SAR supergroup, a eukaryote clade
  • Recirculating aquaculture system, an aquarium system that filters water rather than requiring new water supplies
  • Registration, Admission and Status, a telephony protocol under H.323
  • Reliability, availability and serviceability of computer hardware
  • Remote access service, on a network
  • Reusable Asset Specification of software
  • Row Address Strobe in dynamic random-access memory
  • Russian Accounting Standards

People

  • Ras (surname), several people
  • Ras, the nickname for someone with the given name of Rasmus (given name)
  • Ra's al Ghul, a fictional villain in Batman media
  • Ras Muhamad (born 1982), Indonesian reggae singer
  • Ras Sheehama (1966–2025), Namibian reggae musician
  • Nicholas Furlong (musician) (born 1986), known as RAS, American singer, songwriter, rapper, and record producer
  • Rassius "Ras" Luine, a character from Tales of Eternia
  • Ras (Ninjago), character in Ninjago

Other uses

  • Ras (fascism), a title for a regional leader in fascist Italy
  • Ras (title), an Ethiopian aristocratic and court title, as in Ras Tafari
  • Ras cheese, a variety popular in Egypt
  • RAS syndrome, "redundant acronym syndrome" syndrome
  • Reasonable articulable suspicion, a burden of proof in the United States legal system
  • Rás Tailteann, an annual cycling race in Ireland
  • Stari Ras, a capital city of medieval Serbian state of Raška
  • Replenishment at sea, providing naval ships with supplies while at sea
  • Catepanate of Ras, province of the Byzantine Empire
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