A compound differing from bilirubin only in that the vinyl groups of bilirubin are reduced to ethyl groups. ... See: bilirubinoids. ... (05 Mar 2000) ... 
Type: Term Pronunciation: mez′ō-bil′i-rū′bin Definitions: 1. A compound differing from bilirubin only in that the vinyl groups of bilirubin are reduced to ethyl groups.