Ceres Syllabification: (Ce·res)Pronunciation: /ˈsi(ə)rēz/Definition of Ceres 1 Roman Mythology the goddess of grain and agriculture. Greek equivalent Demeter. 2 Astronomy the first asteroid to be discovered, found by G. Piazzi of Palermo in 1801. It is also the largest, with a diameter of 567 miles (913 km). Ceres in other Oxford dictionaries Definition of Ceres in the British & World English dictionary
