zar

In Persia and later Iran , 20^th century, a unit of length. As part of Persia’s adoption of the metric system, the zar was made the name of the meter, sometime before 1924. Its previous value was 1.04 meters. Both the metric zar = 1 meter and the previous zar, 1.04 meters were reportedly in use in 1995.

The square zar is based on the older zar; that is, it is 1.0816 square meters.¹

1. United Nations, 1966.