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Definition of Order rheiformes
1. Noun. A ratite bird order: birds intermediate in characteristics between ostriches and emus: recent and extinct rheas.
Exact synonyms: Rheiformes
Generic synonyms: Animal Order
Group relationships: Aves, Class Aves
Member holonyms: Family Rheidae, Rheidae
Generic synonyms: Animal Order
Group relationships: Aves, Class Aves
Member holonyms: Family Rheidae, Rheidae