OD History Abbreviation

Also known as: od.

OD has various meanings in the History category. Discover the full forms, definitions, and usage contexts of OD in History.

Ordnance Datum

Most Common

Level to which heights and depths are referred in English surveying Formerly, the level was a rather inaccurate approximation of mean sea-level at Liverpool Is now mean sea level at Newlyn, Cornwall

History

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