kidney
[ kid-nee ]
/ ˈkɪd ni /
noun, plural kid·neys.
Anatomy. either of a pair of bean-shaped organs in the back part of the abdominal cavity that form and excrete urine, regulate fluid and electrolyte balance, and act as endocrine glands.
Zoology. a corresponding organ in other vertebrate animals or an organ of like function in invertebrates.
the meat of an animal's kidney used as food.
constitution or temperament: He was a quiet child, of a different kidney from his boisterous brothers.
kind, sort, or class: He is only at ease with men of his own kidney.
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decorum
Origin of kidney
1275–1325; Middle English kidenei, kidenere (singular), kideneres, kideneren (plural); origin uncertain; perhaps a compound based either on nere (singular), neres (plural) kidney (Old English *nēore; compare Old High German nioro, Old Norse nȳra); or ei (singular), eiren (plural) egg1, Old English ǣg (singular), ǣgru (plural) (by association with the organ's shape); for the first element compare dial. kid pod (akin to cod2)
OTHER WORDS FROM kidney
kid·ney·like, adjectiveWords nearby kidney
kiddy, kideo, kidman, kidnap, kidnapped, kidney, kidney bean, kidney corpuscle, kidney machine, kidney ore, kidney punch
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Example sentences from the Web for kidney
British Dictionary definitions for kidney
kidney
/ (ˈkɪdnɪ) /
noun
either of two bean-shaped organs at the back of the abdominal cavity in man, one on each side of the spinal column. They maintain water and electrolyte balance and filter waste products from the blood, which are excreted as urineRelated adjectives: nephritic, renal
the corresponding organ in other animals
the kidneys of certain animals used as food
class, type, or disposition (esp in the phrases of the same or a different kidney)
Derived forms of kidney
kidneylike, adjectiveWord Origin for kidney
C14: of uncertain origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Medical definitions for kidney
kidney
[ kĭd′nē ]
n. pl. kid•neys
Either of a pair of organs in the dorsal region of the vertebrate abdominal cavity, functioning to maintain proper water and electrolyte balance, regulate acid-base concentration, and filter the blood of metabolic wastes, which are then excreted as urine.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for kidney
kidney
[ kĭd′nē ]
Either of a pair of organs that are located in the rear of the abdominal cavity in vertebrates. The kidneys regulate fluid balance in the body and filter out wastes from the blood in the form of urine. The functional unit of the kidney is the nephron. Wastes filtered from the blood by the nephrons drain into the ureters, muscular tubes that connect each kidney to the bladder. See also nephron.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.