English noun: order Rheiformes | |||
1. | order Rheiformes (animal) a ratite bird order: birds intermediate in characteristics between ostriches and emus: recent and extinct rheas | ||
Synonyms | Rheiformes | ||
Broader (hypernym) | animal order | ||
Member holonym | family Rheidae, Rheidae | ||
Member meronym | Aves, class Aves | ||