ratitae

Ratitae

Ra*ti"t[ae]\, n. pl. [NL., fr. L. ratis a raft; cf. L. ratitus marked with the figure of a raft.] (Zo["o]l.) An order of birds in which the wings are small, rudimentary, or absent, and the breastbone is destitute of a keel. The ostrich, emu, and apteryx are examples.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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