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