Zeus (/ˈzjuːs/ZEWS; Ancient Greek: Ζεύς, Zeús, [zdeǔ̯s]; Modern Greek:Δίας, Días[ˈði.as]) was the sky and thunder god in ancient Greek religion, who ruled as king of the gods of Mount Olympus. His name is cognate with the first element of his Roman equivalent Jupiter.
(Greek mythology) the supreme god of ancient Greek mythology; son of Rhea and Cronus whom he dethroned; husband and brother of Hera; brother of Poseidon and Hades; father of many gods; counterpart of Roman Jupiter