ˌbiləˈrübə̇n, ˌbī- noun
( -s )
Etymology: International Scientific Vocabulary bili- + Latin ruber red + International Scientific Vocabulary -in — more at red
: a reddish yellow crystalline pigment C 33 H 36 N 4 O 6 occurring in bile, blood, urine, and gallstones sometimes in combination with protein and formed by reduction of biliverdin