| 单词 | ratite |
| 释义 | ratite (once / 1477414 pages) n WORD FAMILY ratite: ratites USAGE EXAMPLESWeird Animal Question of the Week decided to explore the whole group to which those birds belong, the flightless ratites. National Geographic(Sep 03, 2016) The largest species of flightless birds alive today are called the ratites, and include the ostrich, emu and rhea. Scientific American(May 27, 2014) Ratites that have disappeared in recent centuries include the moa of New Zealand and the elephant bird. Reuters(May 23, 2014) n flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches; cassowaries; emus; moas; rheas; kiwis; elephant birds Syn|Ant|Hypo|Hyper flightless bird, ratite bird carinate, carinate bird, flying bird birds having keeled breastbones for attachment of flight muscles Struthio camelus, ostrich fast-running African flightless bird with two-toed feet; largest living bird cassowarylarge black flightless bird of Australia and New Guinea having a horny head crest Dromaius novaehollandiae, Emu novaehollandiae, emularge Australian flightless bird similar to the ostrich but smaller apteryx, kiwinocturnal flightless bird of New Zealand having a long neck and stout legs; only surviving representative of the order Apterygiformes Rhea americana, rhealarger of two tall fast-running flightless birds similar to ostriches but three-toed; found from Brazil to Patagonia Pterocnemia pennata, nandu, rheasmaller of two tall fast-running flightless birds similar to ostriches but three-toed; found from Peru to Strait of Magellan aepyornis, elephant birdhuge (to 9 ft.) extinct flightless bird of Madagascar moaextinct flightless bird of New Zealand Dinornis giganteus, giant moathe largest moa; about 12 feet high Anomalopteryx oweni, anomalopteryxthe smallest moa; slender moa about the size of a large turkey bird warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings |
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