noun
the official cartography agency of the British government
• Regions: ↑United Kingdom, ↑UK, ↑U.K., ↑Britain, ↑United Kingdom of Great Britain and Northern Ireland, ↑Great Britain
• Hypernyms: ↑administrative unit, ↑administrative body
* * *
the British government organization responsible for making maps of Britain. These are available in a range of different scales, some of which are very detailed. They are especially popular with people who enjoy walking in the countryside. The OS was started in 1791 to make maps for the army. It also produces historical maps.
Useful english dictionary. 2012.