The branch of medicine concerned with the kidney - its development and anatomy and physiology and disorders WordNet 3.0 & Open English WordNet

Nephrology is a specialty of adult internal medicine and pediatric medicine that concerns the study of the kidneys, specifically normal kidney function and kidney disease, the preservation of kidney health, and the treatment of kidney disease, from diet and medication to renal replacement therapy. Wikipedia

Medical specialty that concerns itself with the kidneys Wikidata

A doctor who specializes in nephrology. OmegaWiki

The branch of medicine that deals with the function and diseases of the kidneys. Wiktionary

Branch of medicine that deals with the kidneys. Wiktionary (translation)