An Akkadian unit of length, 3rd – 1st millenia bce, about 50 centimeters. The value is conceptually the distance from the elbow to the tips of the extended fingers, and so the ammatu belongs to the cubit class of units and is often, like so many such units, confusingly translated as cubit. It corresponds to the Sumerian kuš.
In Babylon in the 1st millenium bce, about 75 centimeters.
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Last revised: 17 August 2008.