The Collaborative International Dictionary
Pelvis of the kidney
Pelvis \Pel"vis\, n. [L., a basin, laver; cf. Gr. ?, ?, bowl.]
(Anat.) The pelvic arch, or the pelvic arch together with the sacrum. See Pelvic arch, under Pelvic, and Sacrum.
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(Zo["o]l.) The calyx of a crinoid.
Pelvis of the kidney (Anat.), the basinlike cavity into which the ureter expands as it joins the kidney.