Glagolitic alphabet
The letter is descended from ѕѣло (pronounced "dzělo"; ) in the Early Cyrillic alphabet, where it had the numerical value 6. The letter Dzělo was itself based on the letter Dzelo in the Glagolitic alphabet. In the Glagolitic alphabet, it was written , and had the numerical value of 8. In Old Church Slavonic it was called ѕѣло (pronounced "dzeló"), and in Church Slavonic it is called ѕѣлѡ (pronounced "zeló").