The Collaborative International Dictionary of English v.0.48:
Casuariiformes \Casuariiformes\ n. an order of ratite birds comprising the cassowaries and emus. Syn: order Casuariiformes. [WordNet 1.5]WordNet (r) 3.0 (2006):
Casuariiformes n 1: a ratite bird order: cassowaries and emus [syn: Casuariiformes, order Casuariiformes]