English edit

 
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Etymology edit

So called because in earlier days the survey was carried out under the direction of the Master-general of the Ordnance.

Proper noun edit

Ordnance Survey

  1. (British) Originally the branch of government that produced maps for the military, now a civilian organisation that produces maps worldwide.
    Synonym: OS
  2. Similar organisations in Ireland and Northern Ireland.
    Related terms: OSNI

Translations edit