01 n. The pelvic arch, or the pelvic arch together with the sacrum. See Pelvic arch, under Pelvic, and Sacrum.
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1.
The pelvic arch, or the pelvic arch together with the sacrum. See Pelvic arch, under Pelvic, and Sacrum.(Anat.) See: Pelvic, Sacrum
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2.
The calyx of a crinoid.(Zool.)
Phrases & compounds
Pelvis of the kidney —
the basinlike cavity into which the ureter expands as it joins the kidney.