creatinine

[kree-at-n-een, -in] Origin

cre·at·i·nine

[kree-at-n-een, -in]
noun Biochemistry.
a crystalline end product of creatine metabolism, C4H7N3O, occurring in urine, muscle, and blood.

Origin:
1850–55; < German Kreatinin, equivalent to kreatin creatine + -in -ine2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Creatinine is always a great word to know.
So is antibody. Does it mean:
Y-shaped protein molecules produced by B cells as a primary immune defense
fluid that circulates in the heart, arteries, capillaries, and veins
Collins
World English Dictionary
creatinine (kriːˈætəˌniːn)
 
n
an anhydride of creatine that is abundant in muscle and excreted in the urine
 
[C19: from German Kreatinin, from Kreatincreatine + -in-ine²]

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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Etymonline
Word Origin & History

creatinine
by 1847, from creatine + -ine.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

creatinine cre·at·i·nine (krē-āt'n-ēn', -ĭn)
n.
A creatine anhydride formed by the metabolism of creatine and found in muscle tissue and blood and normally excreted in the urine as metabolic waste.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
creatinine   (krē-āt'n-ēn', -ĭn)  Pronunciation Key 
A compound formed by the metabolism of creatine, found in muscle tissue and blood and normally excreted in the urine as a metabolic waste. measurement of creatinine levels in the blood is used to evaluate kidney function. Chemical formula: C4H7N3O.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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