bilirubin

American  

[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.

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bilirubin British  

/ 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: C 32 H 36 O 6 N 4

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bilirubin Scientific  

/ bĭl′ĭ-ro̅o̅′bĭn /

1. 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: C ₃₃ H ₃₆ N ₄ O ₆ .

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Etymology

Origin of bilirubin

< German Bilirubin (1864), equivalent to Latin bīli ( s ) bile + rub ( er ) red + German -in -in ²

Example Sentences

See Examples For:

bilirubin

This is caused by a build-up of bilirubin, a yellow substance, in the blood, meaning the babies' skins have a yellow tinge.

From BBC ● Jan. 7, 2025

Children are basically exposed to ultra-violet light to dissolve the excess bilirubin in their red blood cells.

From BBC ● Jan. 7, 2025

“Now that we’ve identified this enzyme, we can start investigating how the bacteria in our gut impact circulating bilirubin levels and related health conditions like jaundice,” said Xiaofang Jiang, the study’s co-author.

From Salon ● Jan. 4, 2024

Typically, bilirubin is secreted into the gut where it has to be discharged.

From Salon ● Jan. 4, 2024

A green pigment present in the bile, formed from bilirubin by oxidation.

From Webster's Unabridged Dictionary (2nd 100 Pages) by Noah Webster