Mesopotamian sky god.
He belonged to a triad that included Bel and Ea . Though he was the highest god, his role in mythology, hymns, and cult was small. The father of all gods, evil spirits, and demons, and the god of kings and the calendar, he was depicted with headdress and horns signifying strength. His Sumerian counterpart, An, was originally envisaged as a great bull; he probably began as a god of herders.