Definition of rhea
: either of two South American ratite birds (Rhea americana and Pterocnemia pennata of the family Rheidae) that resemble but are smaller than the African ostrich and that have three toes, a fully feathered head and neck, an undeveloped tail, and pale gray to brownish feathers that droop over the rump and back
Recent Examples of rhea from the Web
Today’s ostriches, rheas, and cassowaries are not substitutes for the terror birds, just as the fact that birds are living dinosaurs provides little solace for those who have the impossible wish of seeing a living Tyrannosaurus or Allosaurus.
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Origin and Etymology of rhea
New Latin, genus of birds, probably from Latin Rhea, mother of Zeus, from Greek
First Known Use: 1797
RHEA Defined for Kids
Definition of rhea for Students
: a tall flightless South American bird that resembles but is smaller than the ostrich
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