Pronunciation: (pel'vis),[key] —n., —pl.-vis•es, -vesPronunciation: (-vēz).[key]Anat.,Zool. 1. the basinlike cavity in the lower part of the trunk of many vertebrates, formed in humans by the innominate bones, sacrum, etc.
2. the bones forming this cavity.
3. the cavity of the kidney that receives the urine before it is passed into the ureter. See diag. under kidney.