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A dunam (Ottoman Turkish: دونم; Turkish: dönüm), also known as a donum or dunum and as the old, Turkish, or Ottoman stremma, was the Ottoman unit of area equivalent to the Greek stremma or English acre, representing the amount of land that could be ploughed by a team of oxen in a day. The legal definition was "forty standard paces in length and breadth", but its actual area varied considerably from place to place, from a little more than 900 m2 in Ottoman Palestine to around 2500 m2 in Iraq.
The unit is still in use in many areas previously ruled by the Ottomans, although the new or metric dunam has been redefined as exactly one decare (1000 m2), which is 1/10 hectare (1/10 * 10,000 m2), like the modern Greek royal stremma.
The name dönüm, from the Ottoman Turkish dönmek (دونمك, "to turn") appears to be a calque of the Byzantine Greek stremma and had the same size. It was likely adopted by the Ottomans from the Byzantines in Mysia-Bithynia.
Albania, Bosnia and Herzegovina, Serbia, MontenegroEdit
In Bosnia and Herzegovina and also Serbia, the unit is called dulum (дулум) or dunum (дунум). One dulum is equal to 1,600m2 for the region of Leskovac, south Serbia. In Albania it is called dynym or dylym. It is equal to 1,000 square meters.
In Cyprus, a donum is 14,400 square feet (1,340 m2). In the Republic of Cyprus older Greek-Cypriots also still refer to the donum, although this is gradually being replaced by another local Greek Cypriot dialect word, σκάλες ['skales], rather than the mainland Greek word stremma (equivalent to a decare). However, officially Cyprus uses the square metre and the hectare.
A donum consists of 4 evleks, each of which consists of 3,600 square feet (330 m2).
Syria, Israel, Jordan, Lebanon, Palestine and TurkeyEdit
In Israel, Syria, Jordan, Lebanon, Palestine, and Turkey the dunam is 1,000 square metres (10,764 sq ft), which is 1 decare. Before the end of the Ottoman Empire and during the early years of the British Mandate for Palestine, the size of a dunam was 919.3 square metres (9,895 sq ft), but in 1928, the metric dunam of 1,000 square metres (0.10 ha) was adopted, and this is still used.
United Arab EmiratesEdit
A metric dönüm is equal to:
The Byzantine Greek stremma was the probable source of the Turkish unit. The zeugarion (Turkish çift) was a similar unit derived from the area plowed by a team of oxen in a day. The English acre was originally similar to both units in principle, although it developed separately.
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