urosacral


From The Collaborative International Dictionary of English v.0.48:

Urosacral \U`ro*sa"cral\, a. [2d uro- + sacral.] (Anat.)
   Of or pertaining to both the caudal and sacral parts of the
   vertebral column; as, the urosacral vertebrae of birds.
   [1913 Webster]
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