Rhe·a / rēə/ 1. Greek Mythol. one of the Titans, wife of Cronus and mother of Zeus, Demeter, Poseidon, Hera, and Hades. Frightened of betrayal by their children, Cronus ate them; Rhea rescued Zeus from this fate by hiding him and giving Cronus a stone wrapped in blankets instead.2. Astron. a satellite of Saturn, the fourteenth closest to the planet, discovered by Cassini in 1672, and having a diameter of 951 miles (1,530 km).

Rhea in Greek mythology, one of the Titans, wife of Cronus and mother of Zeus, Demeter, Poseidon, Hera, and Hades. Frightened of betrayal by their children, Cronus ate them; Rhea rescued Zeus from this fate by hiding him and giving Cronus a stone wrapped in blankets instead.