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noun, plural -neys.
1.
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.
2.
Zoology. a corresponding organ in other vertebrate animals or an organ of like function in invertebrates.
3.
the meat of an animal's kidney used as food.
4.
constitution or temperament: He was a quiet child, of a different kidney from his boisterous brothers.
5.
kind, sort, or class: He is only at ease with men of his own kidney.
Origin:
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)
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)
Related forms
kid·ney·like, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Kidney
is always a great word to know.
So is tonsil. Does it mean:
| a prominent oval mass of lymphoid tissue on each side of the throat |
| a semilunar valve between the pulmonary artery and the right ventricle of the heart that prevents the blood from flowing back into the right ventricle |
Collins
World English Dictionary
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History
kidney
earlly 14c., of unknown origin, originally kidenere, perhaps a compound of O.E. cwið "womb" + ey "egg," in reference to the shape of the organ. Fig. sense of "temperament" is from 1550s. Kidney bean is from 1540s.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
kidney kid·ney (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.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
kidney  (kĭd'nē) Pronunciation Key
(click for larger image in new window) 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 © 2002. Published by Houghton Mifflin. All rights reserved.
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