renal sinus

noun

Medical Definition of renal sinus

: the main cavity of the kidney that is an expansion behind the hilum and contains the renal pelvis, calyxes, and the major renal vessels

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Cite this Entry

“Renal sinus.” The Merriam-Webster.com Medical Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/medical/renal%20sinus. Accessed 21 January 2020.

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