Noun | 1. | Aepyornidae - coextensive with the order Aepyorniformes bird family - a family of warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings Aepyorniformes, order Aepyorniformes - huge extinct flightless birds: elephant birds genus Aepyornis - type genus of the Aepyornidae: elephant birds |