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2 definitions found

From: Webster's Revised Unabridged Dictionary (1913)

 Ra·ti·tae n. pl.  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.
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From: WordNet (r) 2.0

 Ratitae
      n : used in former classifications to include all ratite bird
          orders [syn: superorder Ratitae]