order Dinornithiformes or·der·di·nornithiformes uncommon noun 1. a ratite bird order: recently extinct flightless birds of New Zealand SynonymsDinornithiformesorder Dinornithiformes Related words Broader terms animal order Parts Aves Part of Dinornithidae WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
