Hadad (hā'dăd) [key]or Adad (ā'dăd) [key], ancient weather god of Semitic origin, worshiped in Babylonia and Assyria. Important throughout the Middle East, he was worshiped under many names. As god of the storm, he was, according to one legend, the Epic of Gilgamesh, responsible for the great flood that overwhelmed the world.
