order rheiformes is a noun meaning "a ratite bird order: birds intermediate in characteristics between ostriches and emus: recent and extinct rheas". It carries one recorded sense.
a ratite bird order: birds intermediate in characteristics between ostriches and emus: recent and extinct rheas
Definitions, synonyms and semantic relations for order rheiformes come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.