| 1. | Classical Mythology. a Titan, the daughter of Uranus and Gaea, the wife and sister of Cronus, and the mother of Zeus, Poseidon, Hera, Hades, Demeter, and Hestia: identified with Cybele and, by the Romans, with Ops. |
| 2. | Astronomy. one of the moons of Saturn. |
| 3. | (lowercase ) either of two South American, ratite birds, Rhea americana or Pterocnemia pennata, resembling the African ostrich but smaller and having three toes. |
| 4. | a female given name. |
-rrhea suff.
Flow; discharge: seborrhea.