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bilirubin

[bil-uh-roo-bin, bil-uh-roo-bin] /ˈbɪl əˌru bɪn, ˌbɪl əˈru bɪn/
noun, Biochemistry
1.
a reddish bile pigment, C 33 H 36 O 6 N 4 , resulting from the degradation of heme by reticuloendothelial cells in the liver: a high level in the blood produces the yellow skin symptomatic of jaundice.
Origin
< German Bilirubin (1864), equivalent to Latin bīli(s) bile + rub(er) red + German -in -in2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for bilirubin
  • Blue light is particularly good at helping the body break down bilirubin, which causes the condition.
  • bilirubin is a yellowish pigment found in bile, a fluid made by the liver.
  • bilirubin is a yellowish pigment found in bile, a fluid produced by the liver.
  • bilirubin is a yellow pigment that is created as the body gets rid of old red blood cells.
  • bilirubin levels increase after alkaline phosphatase rises.
  • The syndrome interferes with the body's ability to move bilirubin from the liver.
  • When red blood cells are broken down, they make bilirubin.
  • High levels of bilirubin cause jaundice, which gives the skin a yellowish tone.
  • bilirubin is a substance normally formed by the breakdown of hemoglobin in the blood.
  • Blood tests may show higher than normal levels of bilirubin and alkaline phosphatase.
British Dictionary definitions for bilirubin

bilirubin

/ˌbɪlɪˈruːbɪn; ˌbaɪ-/
noun
1.
an orange-yellow pigment in the bile formed as a breakdown product of haemoglobin. Excess amounts in the blood produce the yellow appearance associated with jaundice. Formula: C32H36O6N4
Word Origin
C19: from bile1 + Latin ruber red + -in
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for bilirubin
n.

"reddish pigment found in bile," 1871, from German bilirubin (1864), from bili- (see bile) + Latin ruber "red" (see red (1)) + -ine (2).

Online Etymology Dictionary, © 2010 Douglas Harper
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bilirubin in Medicine

bilirubin bil·i·ru·bin (bĭl'ĭ-rōō'bĭn, bĭl'ĭ-rōō'-)
n.
A red bile pigment derived from the degradation of hemoglobin during the normal and abnormal destruction of red blood cells.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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bilirubin in Science
bilirubin
  (bĭl'ĭ-r'bĭn)   
A reddish-yellow pigment that is a constituent of bile and gives it its color. Bilirubin is a porphyrin derived from the degradation of heme. It is often a constituent of gallstones, and also causes the skin discoloration seen in jaundice. Chemical formula: C33H36N4O6.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for bilirubin

a brownish yellow pigment of bile, secreted by the liver in vertebrates, which gives to solid waste products (feces) their characteristic colour. It is produced in bone marrow cells and in the liver as the end product of red-blood-cell (hemoglobin) breakdown. The amount of bilirubin manufactured relates directly to the quantity of blood cells destroyed. About 0.5 to 2 grams are produced daily. It has no known function and can be toxic to the fetal brain.

Learn more about bilirubin with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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