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.
Astronomy. one of the moons of Saturn.
(lowercase) either of two South American, ratite birds, Rhea americana or Pterocnemia pennata, resembling the African ostrich but smaller and having three toes.
either of two large fast-running flightless birds, Rhea americana or Pterocnemia pennata, inhabiting the open plains of S South America: order Rheiformes. They are similar to but smaller than the ostrich, having three-toed feet and a completely feathered body See ratite
C19: New Latin; arbitrarily named after Rhea1
(Greek myth) a Titaness, wife of Cronus and mother of several of the gods, including Zeus: a fertility goddess Roman counterpart Ops