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
For further exploring for "Bilirubin" in Webster Dictionary Online