In Greek religion, daughter of the deities Cronus and Rhea, sister and consort of Zeus (the king of the gods), and goddess of agriculture. Her name indicates that she is a mother. Demeter is rarely mentioned by Homer, nor is she included among the Olympian gods, but the roots of her legend are probably ancient. The legend centers on the story of her daughter Persephone, who is carried off by Hades, the god of the underworld.