OS

From Wikipedia, the free encyclopedia

Look up OS, Os, or os in Wiktionary, the free dictionary.

OS may refer to:

• O.S. Engines, a Japanese manufacturer of model aircraft engines
• Ocean Science, an Oceanographic Journal published by the European Geosciences Union.
• Oculus sinister, meaning "left eye" in eyeglass prescriptions
• "Old Style date" (as "O.S."), a date designation indicating derivation from the Julian Calendar, as opposed to "N.S." indicating derivation from the Gregorian Calendar (see Old Style and New Style dates)
• Open SEAT, a tennis tournament in Barcelona now known as the Torneo Godó
• Open source, a software development model
• Operating system, the software that manages the hardware and software of a computer
• Ordinary Seaman (occupation), an unlicensed member of the deck department of a merchant ship
• Ordnance Survey, the national mapping agency for Great Britain
• Ohtahara syndrome, a brain disorder
• Opening snap, a heart sound present in individuals with AV valve stenosis
• Outlaw Star, a manga and anime series
• Austrian Airlines (IATA designator)
• Ossetic language (ISO 639-1 abbreviation)

os may refer to:

• os, a mouth or external opening (from the Latin), also ostium. In particular:
  • external os, the external orifice of the uterus
  • internal os, the internal orifice of the uterus
  • os or ostium, the "mouth" of a coronary artery

Os may refer to:

• Os, Hedmark, a municipality in Norway
• Os, Hordaland, a municipality in Norway
• Os, Østfold, a parish in Norway
• Ōs, in Old English denoting a god in Anglo-Saxon paganism
• Osmium, a chemical element whose symbol is "Os"
• Os du Randt (born 1972), South African rugby player
• Os Guinness (born 1941), English author and social critic
• Oś, Kluczbork County, Poland
• Osiedle, a name for a housing estate in Poland

O's may refer to:

• Baltimore Orioles

[edit] See also

• Per os, medical term for ingestion by mouth

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.