From Greek

The name of a Greek god, related to the old Indo-European god *Dy?ws, from the root *dyew- meaning "sky" or "shine". In Greek mythology he was the highest of the gods. After he and his siblings defeated the Titans, Zeus ruled over the earth and humankind from atop Mount Olympus. He had control over the weather and his weapon was a thunderbolt.This theonym has cognates in other Indo-European languages including Latin Jupiter, Sanskrit Dyaus, and Old Norse Tyr.