[1] : The Collaborative International Dictionary of English v.0.48

ratitae \rati"tae\ r.atimac"t-e, n. pl. nl., fr. l.
   ratis a raft; cf. l. ratitus marked with the figure of a
   raft. zool.
   an order of birds in which the wings are small, rudimentary,
   or absent, and the breastbone is destitute of a keel. the
   ostrich, emu, moa, and apteryx are examples.
   1913 webster

[2] : WordNet (r) 2.0

ratitae
     n : used in former classifications to include all ratite bird
         orders syn: superorder ratitae
see also:
superorder ratitae 

Ratitae >> R Words
Ratitae, definition of term: Ratitae
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