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Webster 1913 Edition
Ratitae
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Ra-ti′tae
(rȧ-tī′tē̍)
, Noun.
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.