order rheiformes

English Thesaurus

1. a ratite bird order: birds intermediate in characteristics between ostriches and emus: recent and extinct rheas (noun.animal)

hypernym	:	animal order,
definition	:	the order of animals (noun.animal)

member holonym	:	family rheidae, rheidae,
definition	:	a family of birds coextensive with the order Rheiformes (noun.animal)

member meronym	:	aves, class aves,
definition	:	(ornithology) the class of birds (noun.animal)