'Bilirubin' definitions:

Definition of 'bilirubin'

(from WordNet)
noun
An orange-yellow pigment in the bile that forms as a product of hemoglobin; excess amounts in the blood produce the yellow appearance observed in jaundice [syn: bilirubin, hematoidin, haematoidin]

Definition of 'Bilirubin'

From: GCIDE
  • Bilirubin \Bil`i*ru"bin\, n. [L. bilis biel + ruber red.] (Physiol.) A reddish yellow pigment present in human bile, and in that from carnivorous and herbivorous animals; the normal biliary pigment. [1913 Webster]