Word Study
bilirubin
CIDE DICTIONARY
bilirubin, n. [L. bilis biel + ruber red.].
A reddish yellow pigment present in human bile, and in that from carnivorous and herbivorous animals; the normal biliary pigment. [1913 Webster]
OXFORD DICTIONARY
bilirubin, n. the orange-yellow pigment occurring in bile.
Etymology
G f. L bilis BILE + ruber red
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