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kidneys

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kid⋅ney

  [kid-nee]
–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.
Use kidneys in a Sentence
Origin:
1275–1325; ME kidenei, kidenere (sing.), kideneres, kideneren (pl.); orig. uncert.; perh. a compound based either on nere (sing.), neres (pl.) kidney (OE *nēore; cf. OHG nioro, ON nȳra); or ei (sing.), eiren (pl.) egg 1 , OE ǣg (sing.), ǣgru (pl.) (by assoc. with the organ's shape); for the first element cf. dial. kid pod (akin to cod 2 )

Related forms:
kid⋅ney⋅like, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2010.
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Kidney Disease
Kidney Health Care At GW Hospital. Learn More!
www.GWHospital.com
Kidney Failure Symptoms
Suffering From Kidney Failure? Relax, Get Your Advice Here
importanthealthinfo.com
kid·ney   (kĭd'nē)   
n.   pl. kid·neys

  1. Anatomy Either one 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.

  2. The kidney of certain animals, eaten as food.

  3. An excretory organ of certain invertebrates.

  4. Temperment; kind: a person of the same kidney.


[Middle English kidenei.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Cultural Dictionary

kidneys

A pair of organs, the principal parts of the excretory system, located above the waistline at the back of the abdominal cavity. The kidneys filter waste materials from the blood, excreting these wastes in the form of urine; they also regulate the amounts of water and other chemicals in body fluids.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

kidney 
c.1325, 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 1555. Kidney bean is from 1548.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: kid·ney
Pronunciation: 'kid-nE
Function: noun
Inflected Form: plural kidneys
1 : one of a pair of vertebrateorgans situated in the body cavity near the spinal column that excrete waste products of metabolism, in humans are bean-shaped organs about 41/2 inches(111/2 centimeters) long lying behind the peritoneum in a mass of fatty tissue, and consist chiefly of nephrons by which urine is secreted, collected, and discharged into thepelvis of the kidney whence it is conveyed by the ureter to the bladder —compare MESONEPHROS, METANEPHROS, PRONEPHROS
2 : any of various excretory organs of invertebrate animals
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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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.
Cite This Source
Science Dictionary
kidney   (kĭd'nē)  Pronunciation Key 


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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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