order Apterygiformes or·de·rap·terygiformes uncommon noun 1. a ratite bird order: flightless ground birds having vestigial wings and long bills and small eyes: kiwis SynonymsApterygiformesorder Apterygiformes Related words Broader terms animal order Parts Aves Part of Apterygidae WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
