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|Noun||1.||family Rheidae - a family of birds coextensive with the order Rheiformes|
bird family - a family of warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings
order Rheiformes, Rheiformes - a ratite bird order: birds intermediate in characteristics between ostriches and emus: recent and extinct rheas
genus Rhea - type genus of the Rheidae; large tall flightless South American birds similar to but smaller than ostriches
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