from The American Heritage® Dictionary of the English Language, 5th Edition.
- adjective Of, relating to, or resembling an ostrich or a related bird; ratite.
from The Century Dictionary.
- Ostrich-like; resembling or related to the ostriches; struthiiform; ratite.
from the GNU version of the Collaborative International Dictionary of English.
- adjective (Zoöl.) Of or pertaining to the Struthiones, or Ostrich tribe.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective like an
ostrichor other ratite
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
And two oddballs: struthious: ostrich-like formic: ant-like
Thus a difficulty presents itself as to the explanation of the three following relationships: -- (1) That of the Pterodactyles with carinate birds; (2) that of the Dinosauria with struthious birds; (3) that of the carinate and struthious birds with each other.
If it was that of the carinate birds, how did the struthious birds and
Until two or three hundred years ago, the coast-plains of Madagascar were trodden by the great struthious bird, the Æpyornis, apparently the most gigantic member of the avi-fauna of the world, and whose enormous eggs probably gave rise to the stories of the Rukh of the "Arabian Nights."
Nevertheless, the view has been put forward and ably maintained by the same Professor,  as also by Professor Cope in the United States, that the line of descent from reptiles to birds has not been from ordinary reptiles, through pterodactyle-like forms, to ordinary birds, but to the struthious ones from certain extinct reptiles termed
It must have been that of the struthious birds or that of the carinate birds, or something different from both.
In these Dinosauria we find skeletal characters unlike those of ordinary (_i. e._ carinate) birds, but closely resembling in certain points the osseous structure of the struthious birds.
Finally, if it was something different from either, how did the carinate birds and pterodactyles take on independently one special common structure when disagreeing in so many; while the struthious birds, agreeing in many points with the Dinosauria, agree yet more with the carinate birds?
If it was that of the struthious birds, how did the pterodactyles and carinate birds independently arrive at the very same divergent structure?
One such reason is the way in which struthious birds are, or have been, distributed around the antarctic region: as the ostrich in Africa, the rhea in South America, the emeu in Australia, the apteryx, dinornis, &c. in New Zealand, the epiornis in Madagascar.