9 letters · 13 points in Scrabble
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
originFrom international scientific vocabulary, from German Bilirubin. By surface analysis, bili- + rub- + -in. The German word was naturalized into other languages as international scientific vocabulary (e.g., bilirubin, bilirubine, bilirubina).
Etymology from Wiktionary, CC BY-SA 3.0