from The American Heritage® Dictionary of the English Language, 4th Edition

  • abbr. Old Style
  • abbr. ordinary seaman

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • Ordnance Survey
  • operating system
  • oculus sinister — left eye
  • outsize
  • Old Style; a term used in English language historical studies to indicate that a date conforms to the Julian calendar instead of the modern Gregorian calendar
  • n. an Ordnance Survey map.


Sorry, no etymologies found.


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