renal pyramid

noun

anatomy
: any of the somewhat triangular- or wedge-shaped masses of tissue of the inner medulla (see medulla sense 2a) region of the kidney that project as the renal papillae into the renal pelvis, and have a striated appearance due to the presence of collecting tubules and collecting ducts

Word History

First Known Use

1861, in the meaning defined above

Time Traveler
The first known use of renal pyramid was in 1861

Dictionary Entries Near renal pyramid

Cite this Entry

“Renal pyramid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/renal%20pyramid. Accessed 24 Nov. 2024.

Medical Definition

renal pyramid

noun
: any of the somewhat triangular- or wedge-shaped masses of tissue of the inner medulla region of the kidney that project as the renal papillae into the renal pelvis, and have a striated appearance due to the presence of collecting tubules and collecting ducts

called also Malpighian pyramid

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!