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excretion1

[ik-skree-shuh n] /ɪkˈskri ʃən/
noun
1.
the act of excreting.
2.
the substance excreted, as urine or sweat, or certain plant products.
Origin of excretion1
1595-1605
1595-1605; < Late Latin excrētiōn- (stem of excrētiō) that which is sifted out. See excrete, -ion

excretion2

[ik-skree-shuh n] /ɪkˈskri ʃən/
noun
1.
the state of being excrescent.
2.
an excrescence.
Origin
1605-15; < Late Latin excrētiōn- (stem of excrētiō), equivalent to Latin excrēt(us) (past participle of excrēscere; see ex-1, crescent) + iōn- -ion
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Word Origin and History for excretion
n.

c.1600, from French excrétion (16c.), from Latin excretionem, noun of action from past participle stem of excernere "to discharge" (see excrement).

Online Etymology Dictionary, © 2010 Douglas Harper
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excretion in Medicine

excretion ex·cre·tion (ĭk-skrē'shən)
n.

  1. The act or process of discharging waste matter from the blood, tissues, or organs.

  2. The matter, such as urine, feces, or sweat, that is so excreted.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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excretion in Science
excretion
  (ĭk-skrē'shən)   
The elimination by an organism of waste products that result from metabolic processes. In plants, waste is minimal and is eliminated primarily by diffusion to the outside environment. Animals have specific organs of excretion. In vertebrates, the kidney filters blood, conserving water and producing urea and other waste products in the form of urine. The urine is then passed through the ureters to the bladder and discharged through the urethra. The skin and lungs, which eliminate carbon dioxide, are also excretory organs.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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